Rosetta Code/Rank languages by number of users: Difference between revisions
Rosetta Code/Rank languages by number of users (view source)
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, 6 years ago→{{header|Perl 6}}: Add a Perl 6 example
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A Rosetta Code user usually declares using a language with the [[Template:Mylang|mylang]] template. This template is expected to appear on the User page. However, in some cases it appears in a user Talk page. It's not necessary to take this into account. For instance, among the 373 C users in the table above, 3 are actually declared in a Talk page.
=={{header|Perl 6}}==
{{works with|Rakudo|2017.11}}
Use the mediawiki API rather than web scraping since it is much faster and less resource intensive. Show languages with more than 25 users since that is still a pretty short list and to demonstrate how tied rankings are handled. Change the '''$minimum''' parameter to adjust what the cut-off point will be.
This is all done in a single pass; ties are not detected until a language has the same count as a previous one, so ties are marked by a '''T''' next to the count indicating that '''this''' language has the same count as the '''previous'''.
<lang perl6>use HTTP::UserAgent;
use JSON::Fast;
say "========= Generated: { DateTime.new(time) } =========";
my $lang = 1;
my $rank = 0;
my $last = 0;
my $tie = ' ';
my $minimum = 25;
.say for
mediawiki-query('http://rosettacode.org/mw', 'pages',
generator => 'categorymembers',
gcmtitle => "Category:Language users",
prop => 'categoryinfo')\
.map({ .<categoryinfo><pages> || 0,
.<title>.subst(/^'Category:' (.+) ' User'/, ->$/ {$0}) })\
.sort( { -$_[0], $_[1] } )\
.map( { last if @_[0] < $minimum; display(|@_) } );
sub display ($count, $which) {
if $last != $$count { $last = $count; $rank = $lang; $tie = ' ' } else { $tie = 'T' };
sprintf "#%3d Rank: %2d %s with %-4s users: %s", $lang++, $rank, $tie, $count, $which;
}
sub mediawiki-query ($site, $type, *%query) {
my $url = "$site/api.php?" ~ uri-query-string(
:action<query>, :format<json>, :gcmlimit<350>, :rawcontinue(), |%query);
my $continue = '';
my $client = HTTP::UserAgent.new;
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-encode .value}" }).join("&")
}
sub uri-encode ($str) {
$str.subst(/<[\x00..\xff]-[a..zA..Z0..9_.~-]>/, *.ord.fmt('%%%02X'), :g)
}</lang>
{{out}}
<pre>========= Generated: 2017-12-18T13:38:04Z =========
# 1 Rank: 1 with 373 users: C
# 2 Rank: 2 with 261 users: C++
# 3 Rank: 3 with 257 users: Java
# 4 Rank: 4 with 243 users: Python
# 5 Rank: 5 with 228 users: JavaScript
# 6 Rank: 6 with 163 users: PHP
# 7 Rank: 7 with 162 users: Perl
# 8 Rank: 8 with 131 users: SQL
# 9 Rank: 9 with 120 users: UNIX Shell
# 10 Rank: 10 with 118 users: BASIC
# 11 Rank: 11 with 113 users: C sharp
# 12 Rank: 12 with 109 users: Pascal
# 13 Rank: 13 with 98 users: Haskell
# 14 Rank: 14 with 91 users: Ruby
# 15 Rank: 15 with 71 users: Fortran
# 16 Rank: 16 with 65 users: Visual Basic
# 17 Rank: 17 with 60 users: Scheme
# 18 Rank: 18 with 59 users: Prolog
# 19 Rank: 19 with 57 users: Common Lisp
# 20 Rank: 20 with 54 users: Lua
# 21 Rank: 21 with 52 users: AWK
# 22 Rank: 22 with 51 users: HTML
# 23 Rank: 23 with 45 users: Assembly
# 24 Rank: 24 with 44 users: Batch File
# 25 Rank: 25 with 42 users: X86 Assembly
# 26 Rank: 26 with 41 users: Bash
# 27 Rank: 27 with 40 users: Erlang
# 28 Rank: 28 with 37 users: Forth
# 29 Rank: 29 with 35 users: Lisp
# 30 Rank: 29 T with 35 users: MATLAB
# 31 Rank: 29 T with 35 users: Visual Basic .NET
# 32 Rank: 32 with 34 users: J
# 33 Rank: 33 with 33 users: Ada
# 34 Rank: 33 T with 33 users: Brainf***
# 35 Rank: 33 T with 33 users: Delphi
# 36 Rank: 33 T with 33 users: Objective-C
# 37 Rank: 37 with 32 users: Tcl
# 38 Rank: 38 with 31 users: APL
# 39 Rank: 38 T with 31 users: COBOL
# 40 Rank: 40 with 30 users: R
# 41 Rank: 41 with 28 users: Go
# 42 Rank: 41 T with 28 users: Perl 6
# 43 Rank: 43 with 27 users: Clojure
# 44 Rank: 43 T with 27 users: Mathematica
# 45 Rank: 45 with 25 users: AutoHotkey</pre>
=={{header|Stata}}==
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