Rosetta Code/Count examples: Difference between revisions
Thundergnat (talk | contribs) m (→{{header|Perl 6}}: Adjust matcher to catch oddball header markup.) |
No edit summary |
||
Line 1,269:
put "Total" & comma & allTaskTotal after fld "tasks"
end mouseUp</lang>
=={{header|Maple}}==
<lang Maple>ConvertUTF8 := proc( str )
local i, tempstring, uniindex;
try
tempstring := str;
uniindex := [StringTools:-SearchAll("\u",str)];
if uniindex <> [] then
for i in uniindex do
tempstring := StringTools:-Substitute(tempstring, str[i..i+5], UTF8:-unicode(str[i+2..i+5]));
end do:
end if;
return tempstring;
catch:
return str;
end try;
end proc:
print_examples := proc(lst)
local task, count, url, headers, item;
for task in lst do
count := 0:
url := cat("http://www.rosettacode.org/mw/index.php?title=", StringTools:-Encode(StringTools:-SubstituteAll(task["title"], " ", "_"), 'percent'), "&action=raw"):
headers := [StringTools:-SearchAll("=={{header|",URL:-Get(url))]:
for item in headers do
count++:
end do:
printf("%s has %d examples\n",ConvertUTF8(task["title"]), count);
end do:
end proc:
x := JSON:-ParseFile("http://rosettacode.org/mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=20&format=json"):
print_examples(x["query"]["categorymembers"]);
while(assigned(x["continue"]["cmcontinue"])) do
continue := x["continue"]["cmcontinue"]:
more_tasks:= cat("http://rosettacode.org/mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=20&format=json", "&continue=", x["continue"]["continue"], "&cmcontinue=", x["continue"]["cmcontinue"]):
x := JSON:-ParseFile(more_tasks):
print_examples(x["query"]["categorymembers"]);
end do:
</lang>
{{Out|Output}}
<pre>
100 doors has 267 examples
15 Puzzle Game has 42 examples
15 puzzle solver has 4 examples
2048 has 34 examples
24 game has 88 examples
24 game/Solve has 54 examples
4-rings or 4-squares puzzle has 33 examples
9 billion names of God the integer has 42 examples
99 Bottles of Beer has 291 examples
A+B has 224 examples
ABC Problem has 104 examples
Abstract type has 77 examples
Abundant, deficient and perfect number classifications has 69 examples
Accumulator factory has 97 examples
Ackermann function has 194 examples
Active Directory/Connect has 24 examples
Active Directory/Search for a user has 16 examples
Active object has 37 examples
Add a variable to a class instance at runtime has 51 examples
Address of a variable has 69 examples
AKS test for primes has 55 examples
Align columns has 97 examples
Aliquot sequence classifications has 32 examples
Almost prime has 58 examples
Amb has 35 examples
Amicable pairs has 69 examples
Anagrams has 99 examples
Anagrams/Deranged anagrams has 63 examples
Angle difference between two bearings has 24 examples
Animate a pendulum has 55 examples
Animation has 61 examples
Anonymous recursion has 86 examples
Append a record to the end of a text file has 36 examples
Apply a callback to an array has 144 examples
Apply a digital filter (direct form II transposed) has 14 examples
Arbitrary-precision integers (included) has 84 examples
Archimedean spiral has 40 examples
Arena storage pool has 25 examples
Arithmetic evaluation has 51 examples
Arithmetic-geometric mean has 93 examples
Arithmetic-geometric mean/Calculate Pi has 23 examples
Arithmetic/Complex has 101 examples
Arithmetic/Integer has 176 examples
Arithmetic/Rational has 59 examples
Array concatenation has 159 examples
Array length has 124 examples
Arrays has 188 examples
Assertions has 96 examples
Associative array/Creation has 128 examples
Associative array/Iteration has 107 examples
Atomic updates has 38 examples
Average loop length has 34 examples
Averages/Arithmetic mean has 168 examples
Averages/Mean angle has 63 examples
Averages/Mean time of day has 50 examples
Averages/Median has 103 examples
Averages/Mode has 76 examples
Averages/Pythagorean means has 96 examples
Averages/Root mean square has 111 examples
Averages/Simple moving average has 78 examples
AVL tree has 18 examples
Babbage problem has 80 examples
Balanced brackets has 112 examples
Balanced ternary has 34 examples
Barnsley fern has 39 examples
Benford's law has 58 examples
Bernoulli numbers has 43 examples
...
Variable size/Set has 37 examples
Variable-length quantity has 35 examples
Variables has 109 examples
Variadic function has 94 examples
Vector products has 77 examples
Verify distribution uniformity/Chi-squared test has 21 examples
Verify distribution uniformity/Naive has 40 examples
Video display modes has 13 examples
Vigenère cipher has 0 examples
Vigenère cipher/Cryptanalysis has 0 examples
Visualize a tree has 35 examples
Vogel's approximation method has 12 examples
Voronoi diagram has 32 examples
Walk a directory/Non-recursively has 84 examples
Walk a directory/Recursively has 75 examples
Water collected between towers has 28 examples
Web scraping has 75 examples
Window creation has 81 examples
Window creation/X11 has 23 examples
Window management has 19 examples
Wireworld has 47 examples
Word search has 9 examples
Word wrap has 63 examples
World Cup group stage has 14 examples
Write entire file has 53 examples
Write float arrays to a text file has 64 examples
Write language name in 3D ASCII has 59 examples
Write to Windows event log has 23 examples
Xiaolin Wu's line algorithm has 25 examples
XML/DOM serialization has 45 examples
XML/Input has 68 examples
XML/Output has 55 examples
XML/XPath has 52 examples
Y combinator has 81 examples
Yahoo! search interface has 19 examples
Yin and yang has 53 examples
Zebra puzzle has 39 examples
Zeckendorf arithmetic has 10 examples
Zeckendorf number representation has 57 examples
Zero to the zero power has 94 examples
Zhang-Suen thinning algorithm has 26 examples
Zig-zag matrix has 92 examples
</pre>
=={{header|Mathematica}}==
|
Revision as of 14:04, 10 May 2018
![Task](http://static.miraheze.org/rosettacodewiki/thumb/b/ba/Rcode-button-task-crushed.png/64px-Rcode-button-task-crushed.png)
You are encouraged to solve this task according to the task description, using any language you may know.
Find the total number of programming examples for each task and the total for all tasks.
Essentially, count the number of occurrences of =={{header| on each task page.
Output:
100 doors: 20 examples. 99 Bottles of Beer: 29 examples. Abstract type: 10 examples. Total: X examples.
For a full output, updated periodically, see Rosetta Code/Count examples/Full output.
You'll need to use the Media Wiki API, which you can find out about locally, here, or in Media Wiki's API documentation at, API:Query
Ada
Parsing XML file with XMLAda from AdaCore <lang Ada>with Aws.Client, Aws.Messages, Aws.Response, Aws.Resources, Aws.Url; with Dom.Readers, Dom.Core, Dom.Core.Documents, Dom.Core.Nodes, Dom.Core.Attrs; with Input_Sources.Strings, Unicode, Unicode.Ces.Utf8; with Ada.Strings.Unbounded, Ada.Strings.Fixed, Ada.Text_IO, Ada.Command_Line; with Ada.Containers.Vectors;
use Aws.Client, Aws.Messages, Aws.Response, Aws.Resources, Aws.Url; use Dom.Readers, Dom.Core, Dom.Core.Documents, Dom.Core.Nodes, Dom.Core.Attrs; use Aws, Ada.Strings.Unbounded, Ada.Strings.Fixed, Input_Sources.Strings; use Ada.Text_IO, Ada.Command_Line;
procedure Count_Examples is
package Members_Vectors is new Ada.Containers.Vectors ( Index_Type => Positive, Element_Type => Unbounded_String); use Members_Vectors;
Exemples : Vector; Nbr_Lg, Total : Natural := 0;
procedure Get_Vector (Category : in String; Mbr_Vector : in out Vector) is Reader : Tree_Reader; Doc : Document; List : Node_List; N : Node; A : Attr; Page : Aws.Response.Data; Uri_Xml : constant String := "http://rosettacode.org/mw/api.php?action=query&list=categorymembers" & "&format=xml&cmlimit=500&cmtitle=Category:"; begin Page := Client.Get (Uri_Xml & Category); if Response.Status_Code (Page) not in Messages.Success then raise Client.Connection_Error; end if; declare Xml : constant String := Message_Body (Page); Source : String_Input; begin Open (Xml'Unrestricted_Access, Unicode.Ces.Utf8.Utf8_Encoding, Source); Parse (Reader, Source); Close (Source); end; Doc := Get_Tree (Reader); List := Get_Elements_By_Tag_Name (Doc, "cm"); for Index in 1 .. Length (List) loop N := Item (List, Index - 1); A := Get_Named_Item (Attributes (N), "title"); Append (Mbr_Vector, To_Unbounded_String (Value (A))); end loop; Free (List); Free (Reader); end Get_Vector;
function Scan_Page (Title : String) return Natural is Page : Aws.Response.Data; File : Aws.Resources.File_Type; Buffer : String (1 .. 1024); Languages, Position, Last : Natural := 0; begin Page := Client.Get ("http://rosettacode.org/mw/index.php?title=" & Aws.Url.Encode (Title) & "&action=raw"); Response.Message_Body (Page, File); while not End_Of_File (File) loop Resources.Get_Line (File, Buffer, Last); Position := Index (Source => Buffer (Buffer'First .. Last), Pattern => "=={{header|"); if Position > 0 then Languages := Languages + 1; end if; end loop; Close (File); return Languages; end Scan_Page;
begin
Get_Vector ("Programming_Tasks", Exemples);
for I in First_Index (Exemples) .. Last_Index (Exemples) loop declare Title : constant String := To_String (Members_Vectors.Element (Exemples, I)); begin Nbr_Lg := Scan_Page (Title); Total := Total + Nbr_Lg; Put_Line (Title & " :" & Integer'Image (Nbr_Lg) & " exemples."); end; end loop;
Put_Line ("Total :" & Integer'Image (Total) & " exemples.");
end Count_Examples; </lang> Output :
100 doors : 107 exemples. 24 game : 30 exemples. .... Yahoo! search interface : 10 exemples. Zig-zag matrix : 49 exemples. Total : 17238 exemples.
AutoHotkey
<lang AutoHotkey>UrlDownloadToFile
, http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml , tasks.xml
FileRead, tasks, tasks.xml pos = 0 quote = " ; " regtitle := "<cm.*?title=" . quote . "(.*?)" . quote While, pos := RegExMatch(tasks, regtitle, title, pos + 1) {
UrlDownloadToFile , % "http://www.rosettacode.org/w/index.php?title=" . title1 . "&action=raw" , task.xml FileRead, task, task.xml RegExReplace(task, "\{\{header\|", "", count) current := title1 . ": " . count . " examples.`n" output .= current TrayTip, current, % current
} MsgBox % output Return</lang>
BBC BASIC
<lang bbcbasic> VDU 23,22,640;512;8,16,16,128+8 : REM Enable UTF-8 support
SYS "LoadLibrary", "URLMON.DLL" TO urlmon% SYS "GetProcAddress", urlmon%, "URLDownloadToFileA" TO UDTF special$ = "+()'" url$ = "http://www.rosettacode.org/w/api.php?action=query" + \ \ "&list=categorymembers&cmtitle=Category:Programming_Tasks" + \ \ "&cmlimit=500&format=xml" file$ = @tmp$ + "tasks.xml" SYS UDTF, 0, url$, file$, 0, 0 TO fail% IF fail% ERROR 100, "File download failed (tasks)" Total% = 0 file% = OPENIN(file$) WHILE NOT EOF#file% a$ = GET$#file% i% = 0 REPEAT i% = INSTR(a$, "title=", i%+1) IF i% THEN j% = INSTR(a$, ">", i%) title$ = MID$(a$, i%+7, j%-i%-10) REM Replace HTML codes: REPEAT k% = INSTR(title$, "&") IF k% THEN l% = INSTR(title$, ";", k%) title$ = LEFT$(title$,k%-1) + \ \ FNhtml(MID$(title$,k%,l%-k%+1)) + MID$(title$,l%+1) ENDIF UNTIL k% = 0 t$ = title$ REM Substitute characters not allowed in a URL: FOR s% = 1 TO LEN(special$) REPEAT s$ = MID$(special$, s%, 1) k% = INSTR(t$, s$) IF k% t$ = LEFT$(t$,k%-1) + "%" + STR$~ASCs$ + MID$(t$,k%+1) UNTIL k% = 0 NEXT url$ = "http://www.rosettacode.org/w/index.php?title=" + t$ + \ \ "&action=raw" file$ = @tmp$ + "title.htm" SYS UDTF, 0, url$, file$, 0, 0 TO fail% IF fail% ERROR 100, "File download failed " + t$ examples% = 0 task% = OPENIN(file$) WHILE NOT EOF#task% IF INSTR(GET$#task%, "=={{header|") examples% += 1 ENDWHILE CLOSE #task% Total% += examples% PRINT title$ ": " ; examples% " examples." ENDIF UNTIL i% = 0 i% = INSTR(a$, "cmcontinue=") IF i% THEN CLOSE #file% j% = INSTR(a$, """", i%+1) k% = INSTR(a$, """", j%+1) url$ = "http://www.rosettacode.org/w/api.php?action=query" + \ \ "&list=categorymembers&cmtitle=Category:Programming_Tasks" + \ \ "&cmlimit=500&format=xml&cmcontinue=" + MID$(a$,j%+1,k%-j%) REPEAT i% = INSTR(url$, "|") IF i% url$ = LEFT$(url$,i%-1) + "%7C" + MID$(url$,i%+1) UNTIL i% = 0 file$ = @tmp$ + "tasks.xml" SYS UDTF, 0, url$, file$, 0, 0 TO fail% IF fail% ERROR 100, "File download failed (continue)" file% = OPENIN(file$) ENDIF ENDWHILE CLOSE #file% PRINT ' "Total: " ; Total% " examples." END DEF FNhtml(h$) IF LEFT$(h$,2) = "&#" THEN = CHR$(VALMID$(h$,3)) CASE h$ OF WHEN """: = """" ENDCASE = h$</lang>
Sample output:
100 doors: 154 examples. 24 game: 53 examples. 24 game/Solve: 30 examples. 99 Bottles of Beer: 181 examples. A+B: 124 examples. Abstract type: 49 examples. Accumulator factory: 65 examples. Ackermann function: 126 examples. Active Directory/Connect: 12 examples. Active Directory/Search for a user: 13 examples. ...... XML/DOM serialization: 33 examples. XML/Input: 50 examples. XML/Output: 41 examples. XML/XPath: 33 examples. Y combinator: 51 examples. Yahoo! search interface: 13 examples. Yin and yang: 36 examples. Zebra puzzle: 11 examples. Zeckendorf number representation: 14 examples. Zig-zag matrix: 64 examples. Total: 27004 examples.
Bracmat
<lang bracmat>( ( get-page
= . sys$(str$("wget -q -O wget.out \"" !arg \")) & get$("wget.out",HT ML) )
& get-page$"http://rosettacode.org/wiki/Category:Programming_Tasks"
: ? (table.?) ?tasklist (.table.) ?
& 0:?list & whl
' ( !tasklist : ? ( a . (href.@(?:"/wiki/" ?href)) (title.?title) & get-page$(str$("http://rosettacode.org/wiki/" !href)) : ?task & 0:?cnt & whl ' ( !task : ? ( (span.(class.mw-headline) (id.?)) ?span (.span.) ?task & !span : ? ( a . (href.@(?:"/wiki/Category:" ?)) (title.@(?:"Category:" ?)) ) @ (.a.) ? ) & 1+!cnt:?cnt ) & (!cnt.!title)+!list:?list ) ?tasklist )
& lst$(list,taskfreq,NEW)
)</lang>
Output (in file tasqfreq
):
list= (2."OLE Automation") + (3."Canny edge detector") + ( 3 . "Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N1, Contined Fraction N2)" ) + (4."Colour pinstripe/Printer") + (4."Vogel's approximation method") + (5."Catmull–Clark subdivision surface") + (5."Percolation/Bond percolation") + (5.Pinstripe/Printer) + (5."Zeckendorf arithmetic") + (6."Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N)") + (6."Percolation/Mean cluster density") + (7."Bitmap/PPM conversion through a pipe") + (7."Deconvolution/2D+") + (7."K-d tree") .... + (125."Greatest element of a list") + (127."Averages/Arithmetic mean") + (131.Arrays) + (131."Increment a numerical string") + (132."Greatest common divisor") + (133.Loops/While) + (134."Conditional structures") + (136.Arithmetic/Integer) + (137.Loops/For) + (145.Loops/Infinite) + (147."Ackermann function") + (148."Reverse a string") + (152."A+B") + (152."Function definition") + (160."Empty program") + (163."Fibonacci sequence") + (164.Factorial) + (182.FizzBuzz) + (187."100 doors") + (188.Comments) + (216."99 Bottles of Beer") + (269."Hello world/Text");
C#
Object-oriented solution.
<lang csharp>using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; using System.Net;
class Task {
private string _task; private int _examples;
public Task(string task, int examples) { _task = task; _examples = examples; }
public string Name { get { return _task; } }
public int Examples { get { return _examples; } }
public override string ToString() { return String.Format("{0}: {1} examples.", this._task, this._examples); }
}
class Program {
static List<string> GetTitlesFromCategory(string category, WebClient wc) { string content = wc.DownloadString( String.Format("http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:{0}&cmlimit=500&format=json", category) );
return new Regex("\"title\":\"(.+?)\"").Matches(content).Cast<Match>().Select(x => x.Groups[1].Value.Replace("\\/", "/")).ToList(); }
static string GetSourceCodeFromPage(string page, WebClient wc) { return wc.DownloadString( String.Format("http://www.rosettacode.org/w/index.php?title={0}&action=raw", page) ); }
static void Main(string[] args) { WebClient wc = new WebClient(); List<Task> tasks = new List<Task>(); List<string> tasknames = GetTitlesFromCategory("Programming_Tasks", wc);
foreach (string task in tasknames) { string content = GetSourceCodeFromPage(task, wc); int count = new Regex("=={{header", RegexOptions.IgnoreCase).Matches(content).Count; Task t = new Task(task, count);
Console.WriteLine(t); tasks.Add(t); }
Console.WriteLine("\nTotal: {0} examples.", tasks.Select(x => x.Examples).Sum()); }
}</lang>
Clojure
<lang clojure>(ns count-examples
(:import [java.net URLEncoder]) (:use [clojure.contrib.http.agent :only (http-agent string)] [clojure.contrib.json :only (read-json)] [clojure.contrib.string :only (join)]))
(defn url-encode [v] (URLEncoder/encode (str v) "utf-8"))
(defn rosettacode-get [path params]
(let [param-string (join "&" (for [[n v] params] (str (name n) "=" (url-encode v))))] (string (http-agent (format "http://www.rosettacode.org/w/%s?%s" path param-string)))))
(defn rosettacode-query [params]
(read-json (rosettacode-get "api.php" (merge {:action "query" :format "json"} params))))
(defn list-cm
([params] (list-cm params nil)) ([params continue] (let [cm-params (merge {:list "categorymembers"} params (or continue {})) result (rosettacode-query cm-params)] (concat (-> result (:query) (:categorymembers)) (if-let [cmcontinue (-> result (:query-continue) (:categorymembers))] (list-cm params cmcontinue))))))
(defn programming-tasks []
(let [result (list-cm {:cmtitle "Category:Programming_Tasks" :cmlimit 50})] (map #(:title %) result)))
(defn task-count [task]
[task (count (re-seq #"==\{\{header" (rosettacode-get "index.php" {:action "raw" :title task})))])
(defn print-result []
(let [task-counts (map task-count (programming-tasks))] (doseq [[task count] task-counts] (println (str task ":") count) (flush)) (println "Total: " (reduce #(+ %1 (second %2)) 0 task-counts))))
</lang> <lang clojure>count-examples> (print-result) 100 doors: 73 24 game: 18 24 game/Solve: 14 99 Bottles of Beer: 89 Abstract type: 27 Accumulator factory: 23 Ackermann function: 73 Active Directory/Connect: 4 Active Directory/Search for a user: 3 Active object: 14 Add a variable to a class instance at runtime: 21 Address of a variable: 20 ... Total: 11216 nil </lang>
D
<lang D> import tango.io.Stdout; import tango.net.http.HttpClient; import tango.net.http.HttpHeaders; import tango.text.xml.Document; import tango.text.Util;
alias HttpHeader.ContentLength CL;
auto url = "http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml"; void main() {
auto client = new HttpClient (HttpClient.Get, url); client.open(); char[] mainData, tmp; int total, i;
void cat(void[] content) { tmp ~= cast(char[]) content; }
if (client.isResponseOK) { client.read(&cat, client.getResponseHeaders.getInt(CL)); mainData = tmp; tmp = null;
auto doc = new Document!(char); doc.parse(mainData); foreach (n; doc.query.descendant("cm").attribute("title")) { auto subClient = new HttpClient(HttpClient.Get, "http://www.rosettacode.org/w/index.php?title=" ~ replace(n.value.dup, ' ', '_') ~ "&action=raw"); subClient.open(); if (! subClient.isResponseOK) { Stderr (client.getResponse); break; } subClient.read(&cat, subClient.getResponseHeaders.getInt(CL)); foreach (segment; patterns(cast(char[])tmp, "=={{header|")) i++; --i; if (i) --i; Stdout.formatln ("{0,-40} - {}", n.value, i); total += i; tmp = null; i = 0; } Stdout("total examples: ", total).newline; } else { Stderr (client.getResponse); }
} </lang>
EGL
A graphical implementation with a grid showing the number of implementations for each Rosetta Code task as well as total task and implementation counts. Uses MediaWiki API service call to fetch tasks/categories in a JSON format and meets API data limit and continuation requirements to consume 100% of the items.
User Interface: RosettaCodeHandler.egl <lang EGL>package com.eglexamples.client;
import org.eclipse.edt.rui.widgets.*;
handler RosettaCodeHandler type RUIhandler{initialUI =[ui], title = "Rosetta Code Tasks and Counts"}
ui GridLayout{columns = 3, rows = 4, cellPadding = 4, children = [ b1, dg1, l1, l2, l3, l4 ]}; b1 Button{ layoutData = new GridLayoutData{ row = 1, column = 1 }, text = "Go!", onClick ::= b1_onClick }; l1 TextLabel{ layoutData = new GridLayoutData{ row = 1, column = 2 }, text = "Total Tasks:" }; l2 TextLabel{ layoutData = new GridLayoutData{ row = 1, column = 3 }, text = "0" };
l3 TextLabel{ layoutData = new GridLayoutData{ row = 2, column = 2 }, text = "Total Implementations:" }; l4 TextLabel{ layoutData = new GridLayoutData{ row = 2, column = 3 }, text = "0" }; dg1 DataGrid{ layoutData = new GridLayoutData{ row = 3, column = 1, horizontalSpan = 3 }, pageSize = 10, showScrollbar = true,
columns = [ new DataGridColumn{name = "title", displayName = "Task", width=220}, new DataGridColumn{name = "count", displayName = "Count", width=100} ] };
cmcontinue string?; title string?; allTasks Task[];
restBindingTasks IHttp? = new HttpRest{ restType = eglx.rest.ServiceType.TrueRest, request.uri = "http://rosettacode.org/mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=1&format=json"};
restBindingPageDetail IHttp? = new HttpRest{ restType = eglx.rest.ServiceType.TrueRest, request.uri = "http://rosettacode.org/mw/index.php"};
function b1_onClick(event Event in)
call ProxyFunctions.listTasks("") using restBindingTasks
returning to listTasksCallBack onException exceptionHandler; end function listTasksCallBack(retResult RosettaCodeJSON in)
title = retResult.query.categorymembers[1].title; cmcontinue = retResult.queryContinue.categorymembers.cmcontinue;
call ProxyFunctions.fetchPageDetail(title) using restBindingPageDetail
returning to pageDetailCallBack onException exceptionHandler; end
function pageDetailCallBack(pageResults string in) count int = countSubstring("=={{header", pageResults); allTasks.appendElement(new Task { title = title, count = count });
l2.text = l2.text as int + 1; l4.text = l4.text as int + count;
if(cmcontinue != null)
call ProxyFunctions.listTasks(cmcontinue) using restBindingTasks returning to listTasksCallBack onException exceptionHandler; else dg1.data = allTasks as any[]; end
end function countSubstring(substr string in, str string in) returns(int)
if(str.length() > 0 and substr.length() > 0) return (str.length() - str.replaceStr(subStr, "").length()) / subStr.length(); else return 0; end
end
function exceptionHandler(exp AnyException in) end
end
record Task title string; count int; end</lang>
Service Interface: ProxyFunctions.egl <lang EGL>package com.eglexamples.client;
library ProxyFunctions
function listTasks(continueLocation String in) returns (RosettaCodeJSON) {
@Rest{method = _GET, uriTemplate = "&cmcontinue={continueLocation}", requestFormat = None, responseFormat = JSON}
} end
function fetchPageDetail(title String in) returns (String) {
@Rest{method = _GET, uriTemplate = "?title={title}&action=raw", requestFormat = None, responseFormat = None}
} end
end
record RosettaCodeJSON
query Query; queryContinue QueryContinue{JSONName = "query-continue"};
end
record Query
categorymembers Categorymembers[];
end
record Categorymembers
cmcontinue string?; pageid int?; ns int?; title string?;
end
record QueryContinue
categorymembers Categorymembers;
end</lang>
Erlang
<lang erlang> -module(rosseta_examples). -include_lib("xmerl/include/xmerl.hrl").
-export([main/0]).
main() ->
application:start(inets), Titles = read_titles(empty), Result = lists:foldl(fun(Title,Acc) -> Acc + calculate_one(Title) end, 0, Titles), io:format("Total: ~p examples.\n",[Result]), application:stop(inets).
read_titles(CurrentContinue) ->
URL0 = "http://rosettacode.org/mw/api.php?" ++ "action=query&list=categorymembers&cmtitle=Category:Programming_Tasks" ++ "&cmlimit=500&format=xml", URL = case CurrentContinue of empty -> URL0; _ -> URL0 ++ "&cmcontinue=" ++ CurrentContinue end, {ok,Answer} = httpc:request(URL), {Document,_} = xmerl_scan:string(lists:last(tuple_to_list(Answer))), Continue = [Value || #xmlAttribute{value = Value} <- xmerl_xpath:string("//@cmcontinue", Document)], Titles = [Value || #xmlAttribute{value = Value} <- xmerl_xpath:string("//@title", Document)], case Continue of []-> Titles; [ContValue | _] -> Titles ++ read_titles(ContValue) end.
calculate_one(Title0) ->
Title = replace_chars(Title0), URL = "http://www.rosettacode.org/w/index.php?title=" ++ Title ++ "&action=raw", case httpc:request(URL) of {ok,Result} -> {match,Found} = re:run(lists:last(tuple_to_list(Result)), "\n=={{header(|)", [global]), io:format("~ts: ~p examples.\n",[Title0,length(Found)]), length(Found); {error,socket_closed_remotely} -> io:format("Socket closed remotely. Retry.\n"), calculate_one(Title0) end.
replace_chars(String) ->
replace_chars(String,[]).
replace_chars([$ | T],Acc) ->
replace_chars(T, [$_| Acc]);
replace_chars([$+| T],Acc) ->
replace_chars(T, lists:reverse("%2B") ++ Acc);
replace_chars([8211| T],Acc) ->
replace_chars(T, lists:reverse("%E2%80%93") ++ Acc);
replace_chars([Other| T],Acc) ->
replace_chars(T, [Other| Acc]);
replace_chars([],Acc) ->
lists:reverse(Acc).
</lang>
Outputs:
> rosseta_examples:main(). 100 doors: 165 examples. 24 game: 56 examples. 24 game/Solve: 33 examples. ... Zebra puzzle: 12 examples. Zeckendorf number representation: 18 examples. Zig-zag matrix: 65 examples. Total: 28629 examples.
F#
Using asynchronous workflows to perform downloads concurrently:
<lang fsharp>#r "System.Xml.Linq.dll"
let uri1 = "http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml" let uri2 task = sprintf "http://www.rosettacode.org/w/index.php?title=%s&action=raw" task
[|for xml in (System.Xml.Linq.XDocument.Load uri1).Root.Descendants() do
for attrib in xml.Attributes() do if attrib.Name.LocalName = "title" then yield async { let uri = uri2 (attrib.Value.Replace(" ", "_") |> System.Web.HttpUtility.UrlEncode) use client = new System.Net.WebClient() let! html = client.AsyncDownloadString(System.Uri uri) let sols' = html.Split([|"{{header|"|], System.StringSplitOptions.None).Length - 1 lock stdout (fun () -> printfn "%s: %d examples" attrib.Value sols') return sols' }|]
|> Async.Parallel |> Async.RunSynchronously |> fun xs -> printfn "Total: %d examples" (Seq.sum xs)</lang>
This is 21× faster than the python thanks to the concurrency.
Factor
Runs in about a minute. The number of threads is limited to 10 avoid cloudfare's protection mechanism.
<lang factor>USING: arrays assocs concurrency.combinators concurrency.semaphores formatting hashtables http.client io json.reader kernel math math.parser sequences splitting urls.encoding ; IN: rosetta-code.count-examples
CONSTANT: list-url "http://rosettacode.org/mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&cmprop=title&format=json"
- titles ( query -- titles )
"query" of "categorymembers" of [ "title" of ] map ;
- continued-url ( query -- url/f )
"query-continue" of "categorymembers" of [ assoc>query list-url swap "&" glue ] [ f ] if* ;
- (all-programming-titles) ( titles url -- titles' url' )
http-get nip json> [ titles append ] [ continued-url ] bi [ (all-programming-titles) ] [ f ] if* ;
- all-programming-titles ( -- titles ) { } list-url (all-programming-titles) drop ;
CONSTANT: content-base-url "http://rosettacode.org/mw/index.php?title=&action=raw"
- content-url ( title -- url )
" " "_" replace "title" associate assoc>query content-base-url swap "&" glue ;
- occurences ( seq subseq -- n ) split-subseq length 1 - ;
- count-examples ( title -- n )
content-url http-get nip "=={{header|" occurences ;
- print-task ( title n -- ) "%s: %d examples.\n" printf ;
- print-total ( assoc -- ) values sum "Total: %d examples.\n" printf ;
- fetch-counts ( titles -- assoc )
10 <semaphore> [ [ dup count-examples 2array ] with-semaphore ] curry parallel-map ;
- print-counts ( titles -- )
[ [ print-task ] assoc-each nl ] [ print-total ] bi ;
- rosetta-examples ( -- )
all-programming-titles fetch-counts print-counts ;
MAIN: rosetta-examples</lang> Outputs:
100 doors: 169 examples. 24 game: 58 examples. ... Zeckendorf number representation: 22 examples. Zig-zag matrix: 66 examples. Total: 30745 examples.
Go
<lang go>package main
import (
"bytes" "encoding/xml" "fmt" "io" "io/ioutil" "net/http" "net/url" "strings"
)
func req(u string, foundCm func(string)) string {
resp, err := http.Get(u) if err != nil { fmt.Println(err) // connection or request fail return "" } defer resp.Body.Close() for p := xml.NewDecoder(resp.Body); ; { t, err := p.RawToken() switch s, ok := t.(xml.StartElement); { case err == io.EOF: return "" case err != nil: fmt.Println(err) return "" case !ok: continue case s.Name.Local == "cm": for _, a := range s.Attr { if a.Name.Local == "title" { foundCm(a.Value) } } case s.Name.Local == "categorymembers" && len(s.Attr) > 0 && s.Attr[0].Name.Local == "cmcontinue": return url.QueryEscape(s.Attr[0].Value) } } return ""
}
func main() {
taskQuery := "http://rosettacode.org/mw/api.php?action=query" + "&format=xml&list=categorymembers&cmlimit=500" + "&cmtitle=Category:Programming_Tasks" continueAt := req(taskQuery, count) for continueAt > "" { continueAt = req(taskQuery+"&cmcontinue="+continueAt, count) } fmt.Printf("Total: %d examples.\n", total)
}
var marker = []byte("=={{header|") var total int
func count(cm string) {
taskFmt := "http://rosettacode.org/mw/index.php?title=%s&action=raw" taskEsc := url.QueryEscape(strings.Replace(cm, " ", "_", -1)) resp, err := http.Get(fmt.Sprintf(taskFmt, taskEsc)) var page []byte if err == nil { page, err = ioutil.ReadAll(resp.Body) resp.Body.Close() } if err != nil { fmt.Println(err) return } examples := bytes.Count(page, marker) fmt.Printf("%s: %d\n", cm, examples) total += examples
}</lang>
- Output
- (May 25, 2011):
... Y combinator: 40 Yahoo! search interface: 10 Yin and yang: 18 Zig-zag matrix: 50 Total: 18290 examples.
Haskell
from HackageDB
<lang haskell>import Network.Browser import Network.HTTP import Network.URI import Data.List import Data.Maybe import Text.XML.Light import Control.Arrow
justifyR w = foldl ((.return).(++).tail) (replicate w ' ') showFormatted t n = t ++ ": " ++ justifyR 4 (show n)
getRespons url = do
rsp <- Network.Browser.browse $ do setAllowRedirects True setOutHandler $ const (return ()) -- quiet request $ getRequest url return $ rspBody $ snd rsp
getNumbOfExampels p = do
let pg = intercalate "_" $ words p rsp <- getRespons $ "http://www.rosettacode.org/w/index.php?title=" ++ pg ++ "&action=raw" let taskPage = rsp countEx = length $ filter (=="=={{header|") $ takeWhile(not.null) $ unfoldr (Just. (take 11 &&& drop 1)) taskPage return countEx
progTaskExamples = do
rsp <- getRespons "http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml"
let xmls = onlyElems $ parseXML $ rsp tasks = concatMap (map (fromJust.findAttr (unqual "title")). filterElementsName (== unqual "cm")) xmls
taskxx <- mapM getNumbOfExampels tasks let ns = taskxx tot = sum ns
mapM_ putStrLn $ zipWith showFormatted tasks ns putStrLn $ ("Total: " ++) $ show tot</lang>
some output: <lang haskell>*Main> progTaskExamples 100 doors: 56 24 game: 11 24 game Player: 9 99 Bottles of Beer: 73 Abstract type: 23 Ackermann Function: 61 Active object: 9 ... Total: 9156</lang>
Icon and Unicon
The following code uses features exclusive to Unicon. This version handles all tasks, not just the first 500.
<lang Unicon>$define RCINDEX "http://rosettacode.org/mw/api.php?format=xml&action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500" $define RCTASK "http://rosettacode.org/mw/index.php?action=raw&title=" $define RCUA "User-Agent: Unicon Rosetta 0.1" $define RCXUA "X-Unicon: http://unicon.org/" $define TASKTOT "* Total Tasks *" $define TOTTOT "* Total Headers*"
link strings link hexcvt
procedure main(A) # simple single threaded read all at once implementation
Tasks := table(0) every task := taskNames() do { Tasks[TASKTOT] +:= 1 # count tasks every lang := languages(task) do { # count languages Tasks[task] +:= 1 Tasks[TOTTOT] +:= 1 } } every insert(O := set(),key(Tasks)) # extract & sort keys O := put(sort(O--set(TOTTOT,TASKTOT)),TASKTOT,TOTTOT) # move totals to end every write(k := !O, " : ", Tasks[k]," examples.") # report
end
- Generate task names
procedure taskNames()
continue := "" while \(txt := ReadURL(RCINDEX||continue)) do { txt ? { while tab(find("<cm ") & find(s :="title=\"")+*s) do suspend tab(find("\""))\1 if tab(find("cmcontinue=")) then { continue := "&"||tab(upto(' \t')) } else break } }
end
- Generate language headers in a task
procedure languages(task)
static WS initial WS := ' \t' page := ReadURL(RCTASK||CleanURI(task)) page ? while (tab(find("\n==")),tab(many(WS))|"",tab(find("{{"))) do { header := tab(find("==")) header ? { while tab(find("{{header|")) do { suspend 2(="",tab(find("")))\1 } } }
end
procedure CleanURI(u) #: clean up a URI
static tr,dxml # xml & http translation initial { tr := table() every c := !string(~(&digits++&letters++'-_.!~*()/\'`')) do tr[c] := "%"||hexstring(ord(c),2) every /tr[c := !string(&cset)] := c tr[" "] := "_" # wiki convention every push(dxml := [],"&#"||right(ord(c := !"&<>'\""),3,"0")||";",c) } dxml[1] := u # insert URI as 1st arg u := replacem!dxml # de-xml it every (c := "") ||:= tr[!u] # reencode everything c := replace(c,"%3E","'") # Hack to put single quotes back in c := replace(c,"%26quot%3B","\"") # Hack to put double quotes back in return c
end
procedure ReadURL(url) #: read URL into string
page := open(url,"m",RCUA,RCXUA) | stop("Unable to open ",url) text := "" if page["Status-Code"] < 300 then while text ||:= reads(page,-1) else write(&errout,image(url),": ", page["Status-Code"]," ",page["Reason-Phrase"]) close(page) return text
end</lang>
strings provides replacem hexcvt provides hexstring
Sample Output for July 6, 2013 (abridged):
100 doors : 171 examples. 24 game : 60 examples. 24 game/Solve : 37 examples. 9 billion names of God the integer : 12 examples. 99 Bottles of Beer : 199 examples. A+B : 137 examples. Abstract type : 54 examples. Accumulator factory : 67 examples. Ackermann function : 137 examples. ... Y combinator : 56 examples. Yahoo! search interface : 18 examples. Yin and yang : 39 examples. Zebra puzzle : 12 examples. Zeckendorf arithmetic : 3 examples. Zeckendorf number representation : 21 examples. Zig-zag matrix : 67 examples. * Total Tasks * : 676 examples. * Total Headers* : 31146 examples.
J
Solution:
Using getCategoryMembers
from Find unimplemented tasks.
<lang j>require 'web/gethttp'
getAllTaskSolnCounts=: monad define
tasks=. getCategoryMembers 'Programming_Tasks' counts=. getTaskSolnCounts &> tasks tasks;counts
)
getTaskSolnCounts=: monad define
makeuri=. 'http://www.rosettacode.org/w/index.php?title=' , ,&'&action=raw' wikidata=. gethttp makeuri urlencode y ([: +/ '{{header|'&E.) wikidata
)
formatSolnCounts=: monad define
'tasks counts'=. y tasks=. tasks , &.>':' res=. ;:^:_1 tasks ,. (8!:0 counts) ,. <'examples.' res , 'Total examples: ' , ": +/counts
)</lang>
Example Usage: <lang j> formatSolnCounts getAllTaskSolnCounts 100 doors: 61 examples. 24 game: 15 examples. 24 game Player: 11 examples. 99 Bottles of Beer: 76 examples. ...</lang>
Java
<lang java5> import java.util.ArrayList; import ScreenScrape;
public class CountProgramExamples {
private static final String baseURL = "http://rosettacode.org/wiki/"; private static final String rootURL = "http://www.rosettacode.org/w/" + "api.php?action=query&list=categorymembers" + "&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml"; private static final String taskBegin = "title=\""; private static final String taskEnd = "\""; private static final String exmplBegin = ""; private static final String exmplEnd = ""; private static final String editBegin = "";
/** * @param args */ public static void main(String[] args) { int exTotal = 0; try { // Get root query results ArrayList<String> tasks = new ArrayList<String>(); ScreenScrape ss = new ScreenScrape(); String rootPage = ss.read(rootURL); while (rootPage.contains(taskBegin)) { rootPage = rootPage.substring(rootPage.indexOf(taskBegin) + taskBegin.length()); String title = rootPage.substring(0, rootPage.indexOf(taskEnd)); if (!title.contains("Category:")) { tasks.add(title); } rootPage = rootPage.substring(rootPage.indexOf(taskEnd)); } // Loop through each task and print count for (String task : tasks) { String title = task.replaceAll("'", "'"); String taskPage = ss.read(baseURL + title.replaceAll(" ", "_")); int exSubTot; if (taskPage.contains(exmplBegin)) { int startPos = taskPage.lastIndexOf(exmplBegin) + exmplBegin.length(); String countStr = taskPage.substring(startPos, taskPage.indexOf(exmplEnd, startPos)); exSubTot = Integer .parseInt(countStr.contains(".") ? countStr .substring(0, countStr.indexOf(".")) : countStr); } else { exSubTot = 0; while (taskPage.contains(editBegin)) { taskPage = taskPage.substring(taskPage .indexOf(editBegin) + editBegin.length()); exSubTot++; } } exTotal += exSubTot; System.out.println(title + ": " + exSubTot + " examples."); } // Print total System.out.println("\nTotal: " + exTotal + " examples."); } catch (Exception e) { System.out.println(title); System.out.println(startPos + ":" + taskPage.indexOf(exmplEnd, startPos)); System.out.println(taskPage); e.printStackTrace(System.out); } }
} </lang> ScreenScrape class
jq
jq does not duplicate the functionality of `curl` but works seamlessly with it, as illustrated by the following bash script. Note in particular the use of jq's `@uri` filter in the bash function `titles`.
<lang bash>#!/bin/bash
- Produce lines of the form: URI TITLE
function titles {
local uri="http://www.rosettacode.org/mw/api.php?action=query&list=categorymembers" uri+="&cmtitle=Category:Programming_Tasks&cmlimit=5000&format=json" curl -Ss "$uri" | jq -r '.query.categorymembers[] | .title | "\(@uri) \(.)"'
}
- Syntax: count URI
function count {
local uri="$1" curl -Ss "http://rosettacode.org/mw/index.php?title=${uri}&action=raw" | jq -R -n 'reduce (inputs|select(test("=={{header\\|"))) as $x(0; .+1)'
}
local n=0 i while read uri title do
i=$(count "$uri") echo "$title: $i examples." n=$((n + i))
done < <(titles) echo Total: $n examples.</lang>
- Output:
100 doors: 252 examples. 15 Puzzle Game: 36 examples. 2048: 24 examples. ... Order two numerical lists: 65 examples. Ordered Partitions: 28 examples. Ordered words: 85 examples. Palindrome detection: 136 examples. Total: 32416 examples.
Lasso
<lang Lasso>local(root = json_deserialize(curl('http://rosettacode.org/mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=10&format=json')->result)) local(tasks = array, title = string, urltitle = string, thiscount = 0, totalex = 0) with i in #root->find('query')->find('categorymembers') do => {^ #thiscount = 0 #title = #i->find('title') #urltitle = #i->find('title') #urltitle->replace(' ','_')
#title+': ' local(src = curl('http://rosettacode.org/mw/index.php?title='+#urltitle->asBytes->encodeurl+'&action=raw')->result->asString) #thiscount = (#src->split('=={{header|'))->size - 1 #thiscount < 0 ? #thiscount = 0 #thiscount + ' examples.' #totalex += #thiscount '\r' ^} 'Total: '+#totalex+' examples.'</lang>
- Output:
Collecting 10 results:
100_doors: 176 examples. 24_game: 58 examples. 24_game/Solve: 35 examples. 9_billion_names_of_God_the_integer: 16 examples. 99_Bottles_of_Beer: 210 examples. A+B: 142 examples. Abstract_type: 54 examples. Accumulator_factory: 70 examples. Ackermann_function: 143 examples. Active_Directory/Connect: 15 examples. Total: 919 examples.
LiveCode
1. Add a button to a stack, put the following into the mouseUp
2. Add a text field called "tasks"
n.b. The list of tasks is limited to 10 for demo purposes<lang LiveCode>on mouseUp
put empty into fld "taskurls" put URL "http://rosettacode.org/mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=10&format=xml" into apixml put revXMLCreateTree(apixml,true,true,false) into pDocID put "/api/query/categorymembers/cm" into pXPathExpression repeat for each line xmlnode in revXMLEvaluateXPath(pDocID, pXPathExpression) put revXMLAttribute(pDocID,xmlnode,"title") into pgTitle put revXMLAttribute(pDocID,xmlnode,"pageid") into pageId put "http://www.rosettacode.org/w/index.php?title=" & urlEncode(pgTitle) & "&action=raw" into taskURL put URL taskURL into taskPage filter lines of taskPage with "==[[:Category:{PercentEncode Xr} else {Append &%|{PercentEncode Xr} else {Append &%]] [[Category:{PercentEncode Xr} else {Append &%]] Property "Implemented in language" (as page type) with input value "{PercentEncode Xr}</br> else</br> {Append &%" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process. end end end fun {ToHex2 X} [{ToHex1 X div 16} {ToHex1 X mod 16}] end fun {ToHex1 X} if X >= 0 andthen X =< 9 then &0 + X elseif X >= 10 andthen X =< 15 then &A + X - 10 end end
in
{Main}</lang>
Example output:
100 doors: 86 examples. 24 game: 22 examples. 24 game/Solve: 15 examples. 99 Bottles of Beer: 108 examples. A+B: 59 examples. ... Xiaolin Wu's line algorithm: 5 examples. Y combinator: 29 examples. Yahoo! Search: 10 examples. Zig-zag matrix: 43 examples. Total: 14099 examples.
Perl
<lang Perl>use LWP::Simple;
my $site = "http://rosettacode.org"; my $list_url = "/mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml";
for (get("$site$list_url") =~ /cm.*?title="(.*?)"/g) {
(my $slug = $_) =~ tr/ /_/; my $count = () = get("$site/wiki/$slug") =~ /toclevel-1/g; print "$_: $count examples\n";
}</lang>
<lang Perl>use v5.10; use Mojo::UserAgent;
my $site = "http://rosettacode.org"; my $list_url = "/mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml";
my $ua = Mojo::UserAgent->new; $ua->get("$site$list_url")->res->dom->find('cm')->each(sub {
(my $slug = $_->{title}) =~ tr/ /_/; my $count = $ua->get("$site/wiki/$slug")->res->dom->find("#toc .toclevel-1")->size; say "$_->{title}: $count examples";
});</lang>
Perl 6
Retrieves counts for both Tasks and Draft Tasks. Save / Display results as a sortable wikitable rather than a static list. Click on a column header to sort on that column. To do a secondary sort, hold down the shift key and click on a second column header. Tasks have a gray (default) background, Draft Tasks have a yellow background.
For a full output, see Rosetta Code/Count examples/Full output <lang perl6>use HTTP::UserAgent; use URI::Escape; use JSON::Fast;
- Friendlier descriptions for task categories
my %cat = (
'Programming_Tasks' => 'Task', 'Draft_Programming_Tasks' => 'Draft'
);
my $client = HTTP::UserAgent.new;
my $url = 'http://rosettacode.org/mw';
my $hashfile = './RC_Task_count.json'; my $tablefile = './RC_Task_count.txt';
my %tasks;
- clear screen
run($*DISTRO.is-win ?? 'cls' !! 'clear');
- =begin update
note 'Retrieving task information...';
for %cat.keys -> $cat {
mediawiki-query( $url, 'pages', :generator<categorymembers>, :gcmtitle("Category:$cat"), :gcmlimit<350>, :rawcontinue(), :prop<title> ).map({ my $page = $client.get("{ $url }/index.php?title={ uri-escape .<title> }&action=raw").content; my $count = +$page.lc.comb(/ ^^'==' <-[\n=]>* '{{header|' \w+ \N+ '==' \h* $$ /); %tasks{.<title>} = {'cat' => %cat{$cat}, :$count}; print clear, 1 + $++, ' ', %cat{$cat}, ' ', .<title>; })
}
print clear;
note "\nTask information saved to local file: {$hashfile.IO.absolute}"; $hashfile.IO.spurt(%tasks.&to-json);
- =end update
- Load information from local file
%tasks = $hashfile.IO.e ?? $hashfile.IO.slurp.&from-json !! ( );
- Convert saved task / author info to a table
note "\nBuilding table..."; my $count = +%tasks; my $taskcnt = +%tasks.grep: *.value.<cat> eq %cat<Programming_Tasks>; my $draftcnt = $count - $taskcnt; my $total = sum %tasks{*}»<count>;
- Dump table to a file
my $out = open($tablefile, :w) or die "$!\n";
- Add table boilerplate and caption
$out.say:
'{|class="wikitable sortable"', "\n",
"|+ As of { Date.today } :: Tasks: { $taskcnt } :: Draft Tasks:",
"{ $draftcnt } :: Total Tasks: { $count } :: Total Examples: { $total }\n",
"! Count !! Task !! Category"
- Sort tasks by count then add row
for %tasks.sort: { [-.value<count>, .key] } -> $task {
$out.say: ( $task.value<cat> eq 'Draft' ?? "|- style=\"background-color: #ffc\"\n" !! "|-\n" ), "| { $task.value<count> }\n", ( $task.key ~~ /\d/ ?? "|data-sort-value=\"{ $task.key.&naturally }\"| [[{uri-escape $task.key}|{$task.key}]]\n" !! "| [[{uri-escape $task.key}|{$task.key}]]\n" ), "| { $task.value<cat> }"
}
$out.say( "|}" ); $out.close;
note "Table file saved as: {$tablefile.IO.absolute}";
sub mediawiki-query ($site, $type, *%query) {
my $url = "$site/api.php?" ~ uri-query-string( :action<query>, :format<json>, :formatversion<2>, |%query); my $continue = ;
gather loop { my $response = $client.get("$url&$continue"); my $data = from-json($response.content); take $_ for $data.<query>.{$type}.values; $continue = uri-query-string |($data.<query-continue>{*}».hash.hash or last); }
}
sub uri-query-string (*%fields) { %fields.map({ "{.key}={uri-escape .value}" }).join("&") }
sub naturally ($a) { $a.lc.subst(/(\d+)/, ->$/ {0~(65+$0.chars).chr~$0},:g) }
sub clear { "\r" ~ ' ' x 100 ~ "\r" }</lang>
- Abridged output:
Count | Task | Category |
---|---|---|
383 | Hello world/Text | Task |
270 | 99 Bottles of Beer | Task |
262 | 100 doors | Task |
262 | FizzBuzz | Task |
239 | Comments | Task |
239 | Fibonacci sequence | Task |
230 | Factorial | Task |
215 | Empty program | Task |
214 | A+B | Task |
207 | Function definition | Task |
PicoLisp
<lang PicoLisp>(load "@lib/http.l")
(client "rosettacode.org" 80
"mw/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml"
(while (from " title=\"")
(let Task (till "\"")
(client "rosettacode.org" 80 (pack "wiki/" (replace Task " " "_"))
(let Cnt 0
(while (from "")
(unless (sub? "." (till "<" T))
(inc 'Cnt) ) )
(out NIL (prinl (ht:Pack Task) ": " Cnt)) ) ) ) ) )</lang>
Output (05may10):
100 doors: 79 24 game: 21 24 game/Solve: 15 99 Bottles of Beer: 95 A+B: 37 Abstract type: 29 ...
PureBasic
<lang PureBasic>Procedure handleError(value, msg.s)
If value = 0 MessageRequester("Error", msg) End EndIf
EndProcedure
handleError(InitNetwork(), "Unable to initialize network functions.") If OpenConsole()
Define url$, x1$, y1$, title$, unescapedTitle$, encodedURL$ Define x2, i, j, totalExamples, totalTasks url$ = "http://www.rosettacode.org/mw/api.php?action=query" + "&list=categorymembers&cmtitle=Category:Programming_Tasks" + "&cmlimit=500&format=xml" Repeat handleError(ReceiveHTTPFile(url$, "tasks.xml"), "Unable to access tasks URL.") handleError(ReadFile(0, "tasks.xml"), "Unable to read 'task.xml' file.") x1$ = ReadString(0) CloseFile(0) Repeat x2 = FindString(x1$, "title=", x2 + 1) If x2 title$ = Mid(x1$, x2 + 7, 99) title$ = Left(title$, FindString(title$, ">", 1) - 4) unescapedTitle$ = UnescapeString(ReplaceString(title$, "'", "'"), #PB_String_EscapeXML) encodedURL$ = URLEncoder("http://www.rosettacode.org/mw/index.php?title=" + unescapedTitle$ + "&action=raw") If ReceiveHTTPFile(encodedURL$, "task.xml") ReadFile(0, "task.xml") While Not Eof(0) y1$ = ReadString(0) If FindString(y1$, "=={{header|", 1, #PB_String_NoCase) totalExamples + 1 EndIf Wend CloseFile(0) PrintN(unescapedTitle$ +": " + Str(totalExamples) + " examples") totalTasks + totalExamples totalExamples = 0 EndIf EndIf Until x2 = 0 ;check for additional pages of tasks x2 = FindString(x1$, "cmcontinue=") If x2 i = FindString(x1$, #DQUOTE$, x2 + 1) j = FindString(x1$, #DQUOTE$, i + 1) url$ = URLEncoder("http://www.rosettacode.org/mw/api.php?action=query" + "&list=categorymembers&cmtitle=Category:Programming_Tasks" + "&cmlimit=500&format=xml&cmcontinue=" + Mid(x1$, i + 1, j - i)) Else Break ;all done EndIf ForEver PrintN("Total: " + Str(totalTasks) + " examples") Input() CloseConsole()
EndIf</lang> Sample output:
100 doors: 224 examples 24 game: 78 examples 24 game/Solve: 46 examples 9 billion names of God the integer: 33 examples 99 Bottles of Beer: 253 examples A+B: 187 examples ...... Zeckendorf arithmetic: 6 examples Zeckendorf number representation: 37 examples Zero to the zero power: 71 examples Zhang-Suen thinning algorithm: 18 examples Zig-zag matrix: 83 examples Total: 44140 examples
Python
<lang python>import urllib, xml.dom.minidom
x = urllib.urlopen("http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml")
tasks = [] for i in xml.dom.minidom.parseString(x.read()).getElementsByTagName("cm"):
t = i.getAttribute('title').replace(" ", "_") y = urllib.urlopen("http://www.rosettacode.org/w/index.php?title=%s&action=raw" % t.encode('utf-8')) tasks.append( y.read().lower().count("{{header|") ) print t.replace("_", " ") + ": %d examples." % tasks[-1]
print "\nTotal: %d examples." % sum(tasks)</lang>
R
<lang R> library(XML) library(RCurl) doc <- xmlInternalTreeParse("http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml") nodes <- getNodeSet(doc,"//cm") titles = as.character( sapply(nodes, xmlGetAttr, "title") ) headers <- list() counts <- list() for (i in 1:length(titles)){ headersi <- getURL( paste("http://rosettacode.org/mw/index.php?title=", gsub(" ", "_", titles[i]), "&action=raw", sep="") ) countsi <- strsplit(headersi,split=" ")1 countsi <- grep("\\{\\{header", countsi) cat(titles[i], ":", length(countsi), "examples\n") } cat("Total: ", length(unlist(counts)), "examples\n") </lang>
Racket
<lang racket>
- lang racket
(require net/url net/uri-codec json (only-in racket/dict [dict-ref ref]))
(define (RC-get verb params)
((compose1 get-pure-port string->url format) "http://rosettacode.org/mw/~a.php?~a" verb (alist->form-urlencoded params)))
(define (get-category catname)
(let loop ([c #f]) (define t ((compose1 read-json RC-get) 'api `([action . "query"] [format . "json"] [list . "categorymembers"] [cmtitle . ,(format "Category:~a" catname)] [cmcontinue . ,(and c (ref c 'cmcontinue))] [cmlimit . "500"]))) (define (c-m key) (ref (ref t key '()) 'categorymembers #f)) (append (for/list ([page (c-m 'query)]) (ref page 'title)) (cond [(c-m 'query-continue) => loop] [else '()]))))
(printf "Total: ~a\n"
(for/sum ([task (get-category 'Programming_Tasks)]) (define s ((compose1 length regexp-match-positions*) #rx"=={{" (RC-get 'index `([action . "raw"] [title . ,task])))) (printf "~a: ~a\n" task s) s))
</lang>
Ruby
First, a RosettaCode module, saved as rosettacode.rb: <lang ruby>require 'open-uri' require 'rexml/document'
module RosettaCode
URL_ROOT = "http://rosettacode.org/mw"
def self.get_url(page, query) begin # Ruby 1.9.2 pstr = URI.encode_www_form_component(page) qstr = URI.encode_www_form(query) rescue NoMethodError require 'cgi' pstr = CGI.escape(page) qstr = query.map {|k,v| "%s=%s" % [CGI.escape(k.to_s), CGI.escape(v.to_s)]}.join("&") end url = "#{URL_ROOT}/#{pstr}?#{qstr}" p url if $DEBUG url end
def self.get_api_url(query) get_url "api.php", query end
def self.category_members(category) query = { "action" => "query", "list" => "categorymembers", "cmtitle" => "Category:#{category}", "format" => "xml", "cmlimit" => 500, } while true url = get_api_url query doc = REXML::Document.new open(url)
REXML::XPath.each(doc, "//cm") do |task| yield task.attribute("title").value end
continue = REXML::XPath.first(doc, "//query-continue") break if continue.nil? cm = REXML::XPath.first(continue, "categorymembers") query["cmcontinue"] = cm.attribute("cmcontinue").value end end
end</lang>
Then, we implement the task with: <lang ruby>require 'rosettacode'
total_examples = 0
RosettaCode.category_members("Programming_Tasks") do |task|
url = RosettaCode.get_url("index.php", {"action" => "raw", "title" => task}) examples = open(url).read.scan("=={{header").length puts "#{task}: #{examples}" total_examples += examples
end
puts puts "Total: #{total_examples}"</lang>
Rust
<lang rust>extern crate reqwest; extern crate url; extern crate rustc_serialize;
use std::io::Read; use self::url::Url; use rustc_serialize::json::{self, Json};
pub struct Task {
page_id: u64, pub title: String,
}
- [derive(Debug)]
enum ParseError {
/// Something went wrong with the HTTP request to the API. Http(reqwest::Error),
/// There was a problem parsing the API response into JSON. Json(json::ParserError),
/// Unexpected JSON format from response UnexpectedFormat,
} impl From<json::ParserError> for ParseError {
fn from(error: json::ParserError) -> Self { ParseError::Json(error) }
}
impl From<reqwest::Error> for ParseError {
fn from(error: reqwest::Error) -> Self { ParseError::Http(error) }
}
fn construct_query_category(category: &str) -> Url {
let mut base_url = Url::parse("http://rosettacode.org/mw/api.php").unwrap(); let cat = format!("Category:{}", category); let query_pairs = vec![("action", "query"), ("format", "json"), ("list", "categorymembers"), ("cmlimit", "500"), ("cmtitle", &cat), ("continue", "")]; base_url.query_pairs_mut().extend_pairs(query_pairs.into_iter()); base_url
}
fn construct_query_task_content(task_id: &str) -> Url {
let mut base_url = Url::parse("http://rosettacode.org/mw/api.php").unwrap(); let mut query_pairs = vec![("action", "query"), ("format", "json"), ("prop", "revisions"), ("rvprop", "content")]; query_pairs.push(("pageids", task_id)); base_url.query_pairs_mut().extend_pairs(query_pairs.into_iter()); base_url
}
fn query_api(url: Url) -> Result<Json, ParseError> {
let mut response = try!(reqwest::get(url.as_str())); // Build JSON let mut body = String::new(); response.read_to_string(&mut body).unwrap();
Ok(try!(Json::from_str(&body)))
}
fn parse_all_tasks(reply: &Json) -> Result<Vec<Task>, ParseError> {
let json_to_task = |json: &Json| -> Result<Task, ParseError> { let page_id: u64 = try!(json.find("pageid") .and_then(|id| id.as_u64()) .ok_or(ParseError::UnexpectedFormat)); let title: &str = try!(json.find("title") .and_then(|title| title.as_string()) .ok_or(ParseError::UnexpectedFormat));
Ok(Task { page_id: page_id, title: title.to_owned(), }) }; let tasks_json = try!(reply.find_path(&["query", "categorymembers"]) .and_then(|tasks| tasks.as_array()) .ok_or(ParseError::UnexpectedFormat));
// Convert into own type tasks_json.iter().map(json_to_task).collect()
} fn count_number_examples(task: &Json, task_id: u64) -> Result<u32, ParseError> {
let revisions = try!(task.find_path(&["query", "pages", task_id.to_string().as_str(), "revisions"]) .and_then(|content| content.as_array()) .ok_or(ParseError::UnexpectedFormat)); let content = try!(revisions[0] .find("*") .and_then(|content| content.as_string()) .ok_or(ParseError::UnexpectedFormat)); Ok(content.split("=={{header").count() as u32)
}
pub fn query_all_tasks() -> Vec<Task> {
let query = construct_query_category("Programming_Tasks"); let json: Json = query_api(query).unwrap(); parse_all_tasks(&json).unwrap()
}
pub fn query_a_task(task: &Task) -> u32 {
let query = construct_query_task_content(&task.page_id.to_string()); let json: Json = query_api(query).unwrap(); count_number_examples(&json, task.page_id).unwrap()
}</lang>
The function is then run using the following: <lang rust> extern crate count_examples; fn main() {
let all_tasks = count_examples::query_all_tasks(); for task in &all_tasks { let count = count_examples::query_a_task(task); println!("Task: {} has {} examples", task.title, count); }
}</lang>
Run BASIC
<lang runbasic>html "
"a$ = httpGet$("http://rosettacode.org/wiki/Category:Programming_Tasks")
a$ = word$(a$,1,"Num | Task | Examples |
")
i = instr(a$,"<a href=""/wiki/") i = instr(a$,"<a href=""/wiki/",i+1) while i > 0
count = count + 1 i = instr(a$,"<a href=""/wiki/",i+1) j = instr(a$,">",i+5) a1$ = mid$(a$,i+15,j-i) taskId$ = word$(a1$,1,"""") task$ = word$(a1$,3,"""") url$ = "http://rosettacode.org/wiki/";taskId$ a2$ = httpGet$(url$) ii = instr(a2$,"") jj = 0 while ii > 0 jj = ii ii = instr(a2$,"",ii+10) wend if jj = 0 then examp = 0 else kk = instr(a2$,"<",jj+24) examp = int(val(mid$(a2$,jj+24,kk-jj-24))) end if
html "";count;"";task$;"";examp;""
totExamp = totExamp + examp
wend
html "**** Total **";totExamp;""
end</lang>
Num | Task | Examples |
1 | 100 doors | 165 |
2 | 24 game | 56 |
3 | 24 game/Solve | 34 |
4 | 99 Bottles of Beer | 192 |
5 | A+B | 129 |
6 | Abstract type | 51 |
7 | Accumulator factory | 65 |
8 | Ackermann function | 132 |
9 | Active Directory/Connect | 13 |
10 | Active Directory/Search for a user | 13 |
11 | Active object | 22 |
12 | Add a variable to a class instance at runtime | 37 |
... | ... | ... |
655 | Y combinator | 53 |
656 | Yahoo! search interface | 16 |
657 | Yin and yang | 38 |
658 | Zebra puzzle | 12 |
659 | Zeckendorf number representation | 18 |
660 | Zig-zag matrix | 65 |
** | ** Total ** | 28611 |
Scala
<lang Scala>import scala.language.postfixOps
object TaskCount extends App {
import java.net.{ URL, URLEncoder } import scala.io.Source.fromURL
System.setProperty("http.agent", "*") val allTasksURL = "http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml" val allTasks = xml.parsing.XhtmlParser(fromURL(new URL(allTasksURL)))
val regexExpr = "(?i)==\\{\\{header\\|".r
def oneTaskURL(title: String) = { println(s"Check $title") "http://www.rosettacode.org/w/index.php?title=%s&action=raw" format URLEncoder.encode(title.replace(' ', '_'), "UTF-8") }
def count(title: String) = regexExpr findAllIn fromURL(new URL(oneTaskURL(title)))(io.Codec.UTF8).mkString length
val counts = for (task <- allTasks \\ "cm" \\ "@title" map (_.text)) yield scala.actors.Futures.future((task, count(task)))
counts map (_.apply) map Function.tupled("%s: %d examples." format (_, _)) foreach println println("\nTotal: %d examples." format (counts map (_.apply._2) sum))
}</lang>
Sidef
<lang ruby>var lwp = require('LWP::UserAgent').new(agent => 'Mozilla/5.0');
var site = 'http://rosettacode.org'; var list_url = '/mw/api.php?action=query&list=categorymembers&'+
'cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml';
var content = lwp.get(site + list_url).decoded_content;
while (var m = content.match(/cm.*?title="(.*?)"/g)) {
(var slug = m[0]).gsub!(' ', '_'); var count = lwp.get("#{site}/wiki/#{slug}").decoded_content.count(/toclevel-1/g); say "#{m[0]}: #{count} examples";
}</lang>
- Output:
100 doors: 2180 examples 24 game: 760 examples 24 game/Solve: 450 examples 9 billion names of God the integer: 320 examples 99 Bottles of Beer: 2330 examples A+B: 1800 examples ABC Problem: 720 examples Abstract type: 680 examples ...
Tcl
<lang tcl>package require Tcl 8.5 package require http package require json
fconfigure stdout -buffering none
proc get_tasks {category} {
set start [clock milliseconds] puts -nonewline "getting $category members..." set base_url http://www.rosettacode.org/w/api.php set query {action query list categorymembers cmtitle Category:%s format json cmlimit 500} set this_query [dict create {*}[split [format $query $category]]] set tasks [list]
while {1} { set url [join [list $base_url [http::formatQuery {*}$this_query]] ?] set response [http::geturl $url] if {[set s [http::status $response]] ne "ok" || [http::ncode $response] != 200} { error "Oops: url=$url\nstatus=$s\nhttp code=[http::code $response]" } set data [json::json2dict [http::data $response]] http::cleanup $response # add tasks to list foreach task [dict get $data query categorymembers] { lappend tasks [dict get [dict create {*}$task] title] } if {[catch {dict get $data query-continue categorymembers cmcontinue} continue_task] != 0} { # no more continuations, we're done break } dict set this_query cmcontinue $continue_task } puts " found [llength $tasks] tasks in [expr {[clock milliseconds] - $start}] milliseconds" return $tasks
}
- This proc can be replaced by a single regexp command:
- set count [regexp -all "***=$needle" $haystack]
- However this proc is more efficient -- we're dealing with plain strings only.
proc count_substrings {needle haystack} {
set count 0 set idx 0 while {[set idx [string first $needle $haystack $idx]] != -1} { incr count incr idx } return $count
}
set total 0 foreach task [get_tasks Programming_Tasks] {
set url [format "http://www.rosettacode.org/w/index.php?title=%s&action=raw" [string map {{ } _} $task]] set response [http::geturl $url] if {[set s [http::status $response]] ne "ok" || [http::ncode $response] != 200} { error "Oops: url=$url\nstatus=$s\nhttp code=[http::code $response]" } set count [count_substrings "\{\{header|" [http::data $response]] puts [format "%3d examples in %s" $count $task] http::cleanup $response incr total $count
}
puts "\nTotal: $total examples"</lang>
TUSCRIPT
<lang tuscript>$$ MODE TUSCRIPT url="http://www.rosettacode.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Programming_Tasks&cmlimit=500&format=xml" data=REQUEST (url)
BUILD S_TABLE beg=* DATA :title=": BUILD S_TABLE end=* DATA :":
titles=EXTRACT (data,beg|,end,1,0,"~~") titles=SPLIT (titles,":~~:") sz_titles=SIZE (titles)
BUILD R_TABLE header=":==\{\{header|:" all=*
ERROR/STOP CREATE ("tasks",seq-e,-std-)
COMPILE LOOP title=titles ask=* ask =SET_VALUE(ask,"title",title) ask =SET_VALUE(ask,"action","raw") ask =ENCODE (ask,cgi) http ="http://www.rosettacode.org/mw/index.php" url =CONCAT (http,"?",ask) data =REQUEST (url) header =FILTER_INDEX (data,header,-) sz_header=SIZE(header) line =CONCAT (title,"=",sz_header," members") FILE "tasks" = line all =APPEND(all,sz_header) ENDLOOP
ENDCOMPILE all =JOIN(all),sum=SUM(all),time=time() line=CONCAT (time,": ", sz_titles, " Programing Tasks: ", sum, " solutions")
FILE "tasks" = line </lang> Output in file "tasks":
100 doors=104 members 24 game=27 members 24 game/Solve=21 members 99 Bottles of Beer=124 members A+B=76 members Abstract type=35 members Accumulator factory=44 members ... XML/Input=39 members XML/Output=32 members XML/XPath=24 members Xiaolin Wu's line algorithm=0 members Y combinator=33 members Yahoo! search interface=10 members Zig-zag matrix=46 members 2011-01-15 03:41:30: 455 Programing Tasks: 16009 solutions
zkl
Uses shared libraries YAJL and cURL and handles "continue" responses. <lang zkl>var [const] YAJL=Import("zklYAJL")[0], CURL=Import("zklCurl");
fcn getTasks(language){
continueValue,tasks:="",Data(0,String); // "nm\0nm\0...." do{ page:=CURL().get(("http://rosettacode.org/mw/api.php?" "action=query&cmlimit=500"
"&format=json" "&list=categorymembers" "&cmtitle=Category:%s" "&cmcontinue=%s").fmt(language,continueValue));
page=page[0].del(0,page[1]); // get rid of HTML header json:=YAJL().write(page).close(); json["query"]["categorymembers"].pump(tasks,T("get","title")); continueValue=json.find("continue") //continue:-||,cmcontinue:page|954|19) .toList().apply("concat","=").concat("&"); }while(continueValue); tasks
} re:=RegExp(0'!\s+==\s*{{\s*header\s*|!); // == {{ header | zkl foreach task in (getTasks("Programming_Tasks")){
page:=CURL().get( "http://www.rosettacode.org/mw/index.php?title=%s&action=raw" .fmt(CURL.urlEncode(task))); page=page[0].del(0,page[1]); // get rid of HTML header cnt,n:=0,0; while(re.search(page,True,n)){ cnt+=1; n=re.matched[0].sum(0); } "%4d: %s".fmt(cnt,task).println();
}</lang>
- Output:
229: 100 doors 15: 15 Puzzle Game ... 257: 99 Bottles of Beer 199: A+B ... 28: Calendar - for "REAL" programmers ... 9: Stream Merge ... 78: Zero to the zero power 19: Zhang-Suen thinning algorithm 83: Zig-zag matrix
- Programming Tasks
- Rosetta Code related
- Ada
- AWS
- AutoHotkey
- BBC BASIC
- Bracmat
- C sharp
- Clojure
- D
- EGL
- Erlang
- Xmerl
- F Sharp
- Factor
- Go
- Haskell
- HTTP XML
- Unicon
- ",tab(find("
- Icon Programming Library
- J
- Java
- Jq
- Lasso
- LiveCode
- Perl
- Mojolicious
- Perl 6
- PicoLisp
- PureBasic
- Python
- R
- XML (R)
- RCurl
- Racket
- Ruby
- REXML
- Rust
- Run BASIC
- Scala
- Sidef
- Tcl
- Tcllib
- TUSCRIPT
- Zkl
- Batch File/Omit
- Brainf***/Omit
- Brlcad/Omit
- GUISS/Omit
- Lilypond/Omit
- Maxima/Omit
- Openscad/Omit
- PostScript/Omit
- TI-83 BASIC/Omit
- TI-89 BASIC/Omit
- Yorick/Omit
- ZX Spectrum Basic/Omit