Nested templated data
You are encouraged to solve this task according to the task description, using any language you may know.
A template for data is an arbitrarily nested tree of integer indices.
Data payloads are given as a separate mapping, array or other simpler, flat,
association of indices to individual items of data, and are strings.
The idea is to create a data structure with the templates' nesting, and the
payload corresponding to each index appearing at the position of each index.
Answers using simple string replacement or regexp are to be avoided. The idea is to use the native, or usual implementation of lists/tuples etc of the language and to hierarchically traverse the template to generate the output.
- Task Detail
Given the following input template t and list of payloads p:
# Square brackets are used here to denote nesting but may be changed for other,
# clear, visual representations of nested data appropriate to ones programming
# language.
t = [
[[1, 2],
[3, 4, 1],
5]]
p = 'Payload#0' ... 'Payload#6'
The correct output should have the following structure, (although spacing and linefeeds may differ, the nesting and order should follow):
[[['Payload#1', 'Payload#2'],
['Payload#3', 'Payload#4', 'Payload#1'],
'Payload#5']]
1. Generate the output for the above template, t.
- Optional Extended tasks
2. Show which payloads remain unused.
3. Give some indication/handling of indices without a payload.
Show output on this page.
AutoHotkey
;-----------------------------------------------------------
Nested_templated_data(template, Payload){
UsedP := [], UnusedP := [], UnusedI := []
result := template.Clone()
x := ArrMap(template, Payload, result, UsedP, UnusedI, [])
for i, v in Payload
if !UsedP[v]
UnusedP.Push(v)
return [x.1, x.2, UnusedP]
}
;-----------------------------------------------------------
ArrMap(Template, Payload, result, UsedP, UnusedI, pth){
for i, index in Template {
if IsObject(index)
pth.Push(i), Arrmap(index, Payload, result, UsedP, UnusedI, pth)
else{
pth.Push(i), ArrSetPath(result, pth, Payload[index])
if Payload[index]
UsedP[Payload[index]] := 1
else
UnusedI.Push(index)
}
pth.Pop()
}
return [result, UnusedI, UsedP]
}
;-----------------------------------------------------------
ArrSetPath(Arr, pth, newVal){
temp := []
for k, v in pth{
temp.push(v)
if !IsObject(Arr[temp*])
Arr[temp*] := []
}
return Arr[temp*] := newVal
}
;-----------------------------------------------------------
objcopy(obj){
nobj := obj.Clone()
for k, v in nobj
if IsObject(v)
nobj[k] := objcopy(v)
return nobj
}
;-----------------------------------------------------------
Examples:
T := [[[1,2] , [3,4,1] , 5]]
; Autohotkey uses 1-based objects/arrays
P := ["Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6", "Payload#7"]
Results := Nested_templated_data(objcopy(t), P)
output := Results.1
Undefined_indices := Results[2]
Unused_Payloads := Results[3]
- Output:
T := [[[1,2] , [3,4,1] , 5]] P := ["Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6", "Payload#7"] output : [[["payload#1", "payload#2"] , ["payload#3", "payload#4", "payload#1"] , "payload#5"]] Undefined_indices : [] Unused_Payloads : ["Payload#6", "Payload#7"] ;----------------------------------------------------------- T := [[[1,2] , [3,4,1,8] , 5]] P := ["Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6", "Payload#7"] output : [[["payload#1", "payload#2"] , ["payload#3", "payload#4", "payload#1", ""] , "payload#5"]] Undefined_indices : [8] Unused_Payloads : ["Payload#6", "Payload#7"]
BASIC
Applesoft BASIC
The GW-BASIC solution works without any changes.
BASIC256
dim p(7)
dim p$(7)
p$[0] = "Payload#0" : p$[1] = "Payload#1"
p$[2] = "Payload#2" : p$[3] = "Payload#3"
p$[4] = "Payload#4" : p$[5] = "Payload#5"
p$[6] = "Payload#6"
dim q(7) fill false
dim t(4, 5)
t[0, 0] = 1: t[0, 1] = 2
t[1, 0] = 3: t[1, 1] = 4: t[1, 2] = 1
t[2, 0] = 5
for i = 0 to t[?][]-1
for j = 0 to t[?][]-1
if t[i, j] <> 0 then
q[t[i, j]] = true
t[i, j] += 1
end if
next j
next i
for i = 0 to t[?][]-1
for j = 0 to t[?][]-1
if t[i, j] <> 0 then print p$[t[i, j] -1]; " ";
next j
print
next i
for i = 0 to q[?]-1
if not q[i] then print p$[i]; " is not used"
next i
- Output:
Same as FreeBASIC entry.
Chipmunk Basic
100 cls
110 dim i,j,p(6)
120 dim p$(6)
130 p$(0) = "Payload#0" : p$(1) = "Payload#1"
140 p$(2) = "Payload#2" : p$(3) = "Payload#3"
150 p$(4) = "Payload#4" : p$(5) = "Payload#5"
160 p$(6) = "Payload#6"
170 dim q(6)
180 dim t(2,3)
190 t(0,0) = 1 : t(0,1) = 2
200 t(1,0) = 3 : t(1,1) = 4 : t(1,2) = 1
210 t(2,0) = 5
220 for i = 0 to ubound(t)
230 for j = 0 to ubound(t,2)
240 if t(i,j) <> 0 then
250 q(t(i,j)) = true
260 t(i,j) = t(i,j)+1
270 endif
280 next j
290 next i
300 for i = 0 to ubound(t)
310 for j = 0 to ubound(t,2)
320 if t(i,j) <> 0 then print p$(t(i,j)-1);" ";
330 next j
340 print
350 next i
360 for i = 0 to ubound(q)
370 if not q(i) then print p$(i);" is not used"
380 next i
390 end
- Output:
Same as FreeBASIC entry.
FreeBASIC
Dim As Integer t(2, 3) = {{1,2},{3,4,1},{5}}
Dim As Integer i, j, p(6)
Dim As String pStr(6) = {"Payload#0", "Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6"}
Dim As Boolean q(6)
For i = Lbound(t) To Ubound(t)
For j = Lbound(t, 2) To Ubound(t, 2)
If t(i, j) <> 0 Then
q(t(i, j)) = True
t(i, j) += 1
End If
Next j
Next i
For i = Lbound(t) To Ubound(t)
For j = Lbound(t, 2) To Ubound(t, 2)
If t(i, j) <> 0 Then Print pStr(t(i, j)-1); " ";
Next j
Print
Next i
For i = Lbound(q) To Ubound(q)
If q(i) = False Then Print pStr(i); " is not used"
Next i
Sleep
- Output:
Payload#1 Payload#2 Payload#3 Payload#4 Payload#1 Payload#5 Payload#0 is not used Payload#6 is not used
GW-BASIC
110 TRUE = -1
120 FALSE = NOT TRUE
130 DIM I,J,P(6)
140 DIM P$(6)
150 P$(0) = "Payload#0" : P$(1) = "Payload#1"
160 P$(2) = "Payload#2" : P$(3) = "Payload#3"
170 P$(4) = "Payload#4" : P$(5) = "Payload#5"
180 P$(6) = "Payload#6"
190 DIM Q(6)
200 DIM T(2,3)
210 T(0,0) = 1 : T(0,1) = 2
220 T(1,0) = 3 : T(1,1) = 4 : T(1,2) = 1
230 T(2,0) = 5
240 FOR I = 0 TO 2
250 FOR J = 0 TO 3
260 IF T(I,J) <> 0 THEN Q(T(I,J)) = TRUE : T(I,J) = T(I,J)+1
270 NEXT J
280 NEXT I
290 FOR I = 0 TO 2
300 FOR J = 0 TO 3
310 IF T(I,J) <> 0 THEN PRINT P$(T(I,J)-1);" ";
320 NEXT J
330 PRINT
340 NEXT I
350 FOR I = 0 TO 6
360 IF Q(I) = FALSE THEN PRINT P$(I);" is not used"
370 NEXT I
380 END
- Output:
Same as FreeBASIC entry.
MSX Basic
The GW-BASIC solution works without any changes.
QBasic
True = -1: False = NOT True
DIM p(6)
DIM p$(6)
p$(0) = "Payload#0": p$(1) = "Payload#1"
p$(2) = "Payload#2": p$(3) = "Payload#3"
p$(4) = "Payload#4": p$(5) = "Payload#5"
p$(6) = "Payload#6"
DIM q(6)
DIM t(2, 3)
t(0, 0) = 1: t(0, 1) = 2
t(1, 0) = 3: t(1, 1) = 4: t(1, 2) = 1
t(2, 0) = 5
FOR i = LBOUND(t) TO UBOUND(t) '0 To 2
FOR j = LBOUND(t, 2) TO UBOUND(t, 2) '0 To 3
IF t(i, j) <> 0 THEN
q(t(i, j)) = True
t(i, j) = t(i, j) + 1
END IF
NEXT j
NEXT i
FOR i = LBOUND(t) TO UBOUND(t) '0 To 2
FOR j = LBOUND(t, 2) TO UBOUND(t, 2) '0 To 3
IF t(i, j) <> 0 THEN PRINT p$(t(i, j) - 1); " ";
NEXT j
PRINT
NEXT i
FOR i = LBOUND(q) TO UBOUND(q)
IF q(i) = False THEN PRINT p$(i); " is not used"
NEXT i
- Output:
Same as FreeBASIC entry.
QB64
The QBasic solution works without any changes.
Run BASIC
DIM p(6)
DIM p$(6)
p$(0) = "Payload#0": p$(1) = "Payload#1"
p$(2) = "Payload#2": p$(3) = "Payload#3"
p$(4) = "Payload#4": p$(5) = "Payload#5"
p$(6) = "Payload#6"
DIM q(6)
DIM t(2, 3)
t(0, 0) = 1: t(0, 1) = 2
t(1, 0) = 3: t(1, 1) = 4: t(1, 2) = 1
t(2, 0) = 5
FOR i = 0 TO 2
FOR j = 0 TO 3
IF t(i, j) <> 0 THEN
q(t(i, j)) = -1
t(i, j) = t(i, j) + 1
END IF
NEXT j
NEXT i
FOR i = 0 TO 2
FOR j = 0 TO 3
IF t(i, j) <> 0 THEN PRINT p$(t(i, j) - 1); " ";
NEXT j
PRINT
NEXT i
FOR i = 0 TO 6
IF q(i) = 0 THEN PRINT p$(i); " is not used"
NEXT i
- Output:
Same as QBasic entry.
Yabasic
dim p(6)
dim p$(6)
p$(0) = "Payload#0" : p$(1) = "Payload#1"
p$(2) = "Payload#2" : p$(3) = "Payload#3"
p$(4) = "Payload#4" : p$(5) = "Payload#5"
p$(6) = "Payload#6"
dim q(6)
dim t(2, 3)
t(0, 0) = 1: t(0, 1) = 2
t(1, 0) = 3: t(1, 1) = 4: t(1, 2) = 1
t(2, 0) = 5
for i = 0 to arraysize(t(), 1)
for j = 0 to arraysize(t(), 2)
if t(i, j) <> 0 then
q(t(i, j)) = True
t(i, j) = t(i, j) + 1
fi
next j
next i
for i = 0 to arraysize(t(), 1)
for j = 0 to arraysize(t(), 2)
if t(i, j) <> 0 print p$(t(i, j) -1), " ";
next j
print
next i
for i = 0 to arraysize(q(), 1)
if not q(i) print p$(i), " is not used"
next i
- Output:
Same as FreeBASIC entry.
Bracmat
The uninstantiated template and the instantiated template are JSON structures. The payloads are listed in a Bracmat list. The get function is instructed to read input from memory and to parse it as JSON. The output of this call is a Bracmat structure (not shown) that is assigned to template. The instantiate function recursively traverses the template's tree structure. If the current node is a number, then that number is used as the key into the payloads list. The corresponding payload is then returned. If the current node is not a number, then it is assumed that the current node is a binary (sub)tree. The left hand side (called a) and the right hand side (called b) are instantiated and their combination is returned. Finally the instantiated tree is transformed back to JSON format and output.
( get$("[
[[1, 2],
[3, 4, 1],
5]]",MEM,JSN)
: ?template
& (0.payload#0)
(1.payload#1)
(2.payload#2)
(3.payload#3)
(4.payload#4)
(5.payload#5)
(6.payload#6)
: ?payloads
& ( instantiate
= tmplt plds pld a b
. !arg:(?tmplt.?plds)
& ( !tmplt:#
& !plds:? (!tmplt.?pld) ?
& !pld
| !tmplt:%?a_%?b
& (instantiate$(!a.!plds))_(instantiate$(!b.!plds))
)
)
& out$(jsn$(instantiate$(!template.!payloads)))
);- Output:
[[[payload#1,payload#2],[payload#3,payload#4,payload#1],payload#5]]
C++
Uses C++17 or later.
The nested indexes are defined by tuples from the standard library. C++ function templates recursively traverse the tuple structure and map to the payloads.
#include <iostream>
#include <set>
#include <tuple>
#include <vector>
using namespace std;
// print a single payload
template<typename P>
void PrintPayloads(const P &payloads, int index, bool isLast)
{
if(index < 0 || index >= (int)size(payloads)) cout << "null";
else cout << "'" << payloads[index] << "'";
if (!isLast) cout << ", "; // add a comma between elements
}
// print a tuple of playloads
template<typename P, typename... Ts>
void PrintPayloads(const P &payloads, tuple<Ts...> const& nestedTuple, bool isLast = true)
{
std::apply // recursively call PrintPayloads on each element of the tuple
(
[&payloads, isLast](Ts const&... tupleArgs)
{
size_t n{0};
cout << "[";
(PrintPayloads(payloads, tupleArgs, (++n == sizeof...(Ts)) ), ...);
cout << "]";
cout << (isLast ? "\n" : ",\n");
}, nestedTuple
);
}
// find the unique index of a single index (helper for the function below)
void FindUniqueIndexes(set<int> &indexes, int index)
{
indexes.insert(index);
}
// find the unique indexes in the tuples
template<typename... Ts>
void FindUniqueIndexes(set<int> &indexes, std::tuple<Ts...> const& nestedTuple)
{
std::apply
(
[&indexes](Ts const&... tupleArgs)
{
(FindUniqueIndexes(indexes, tupleArgs),...);
}, nestedTuple
);
}
// print the payloads that were not used
template<typename P>
void PrintUnusedPayloads(const set<int> &usedIndexes, const P &payloads)
{
for(size_t i = 0; i < size(payloads); i++)
{
if(usedIndexes.find(i) == usedIndexes.end() ) cout << payloads[i] << "\n";
}
}
int main()
{
// define the playloads, they can be in most containers
vector payloads {"Payload#0", "Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6"};
const char *shortPayloads[] {"Payload#0", "Payload#1", "Payload#2", "Payload#3"}; // as a C array
// define the indexes as a nested tuple
auto tpl = make_tuple(make_tuple(
make_tuple(1, 2),
make_tuple(3, 4, 1),
5));
cout << "Mapping indexes to payloads:\n";
PrintPayloads(payloads, tpl);
cout << "\nFinding unused payloads:\n";
set<int> usedIndexes;
FindUniqueIndexes(usedIndexes, tpl);
PrintUnusedPayloads(usedIndexes, payloads);
cout << "\nMapping to some out of range payloads:\n";
PrintPayloads(shortPayloads, tpl);
return 0;
}
- Output:
Mapping indexes to payloads: [[['Payload#1', 'Payload#2'], ['Payload#3', 'Payload#4', 'Payload#1'], 'Payload#5'] ] Finding unused payloads: Payload#0 Payload#6 Mapping to some out of range payloads: [[['Payload#1', 'Payload#2'], ['Payload#3', null, 'Payload#1'], null] ]
Crystal
def with_payload(template, payload, used = nil)
template.map do |item|
if item.is_a? Enumerable
with_payload(item, payload, used)
else
used << item
payload[item]
end
end
end
p = {"Payload#0", "Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6"}
t = { { {1, 2}, {3, 4, 1}, 5}}
used = Set(Int32).new
puts with_payload(t, p, used)
unused = Set(Int32).new((0..6).to_a) - used
puts "Unused indices: #{unused}"
- Output:
{{{"Payload#1", "Payload#2"}, {"Payload#3", "Payload#4", "Payload#1"}, "Payload#5"}}
Unused indices: Set{0, 6}
Factor
Words for traversing nested sequences can be found in the sequences.deep vocabulary. Factor's prettyprinter attempts to print structures on a single line (64 characters by default, though this can be changed) if they will fit. Otherwise, the prettyprinter will break them up into multiple lines, preferring to show one member per line if possible. f, Factor's false/nil value, is used to indicate a missing payload.
USING: formatting kernel literals math sequences sequences.deep ;
IN: rosetta-code.nested-template-data
CONSTANT: payloads $[ 7 <iota> [ "Payload#%d" sprintf ] map ]
: insert-payloads ( template -- data-structure )
[ dup fixnum? [ payloads ?nth ] when ] deep-map ;
{ { { 1 2 }
{ 3 4 1 }
5 } }
{ { { 1 2 }
{ 10 4 1 }
5 } }
[ dup insert-payloads "Template: %u\nData Structure: %u\n"
printf ] bi@
- Output:
Template: { { { 1 2 } { 3 4 1 } 5 } }
Data Structure: {
{
{ "Payload#1" "Payload#2" }
{ "Payload#3" "Payload#4" "Payload#1" }
"Payload#5"
}
}
Template: { { { 1 2 } { 10 4 1 } 5 } }
Data Structure: {
{
{ "Payload#1" "Payload#2" }
{ f "Payload#4" "Payload#1" }
"Payload#5"
}
}
Go
Go's standard library includes a "text/template" package which can be used for this task.
The integer indices are represented by the keys of a map whose corresponding value is the appropriate payload string. Templates have their own mini-language and, for a map P with key n, the expression:
{{index .P n}}
will be replaced by the corresponding payload.
If an integer index either doesn't exist in the map or maps to an empty payload, then the above expression will simply be replaced by an empty string when the template is executed.
package main
import (
"fmt"
"os"
"sort"
"strings"
"text/template"
)
func main() {
const t = `[[[{{index .P 1}}, {{index .P 2}}],
[{{index .P 3}}, {{index .P 4}}, {{index .P 1}}],
{{index .P 5}}]]
`
type S struct {
P map[int]string
}
var s S
s.P = map[int]string{
0: "'Payload#0'", 1: "'Payload#1'", 2: "'Payload#2'", 3: "'Payload#3'",
4: "'Payload#4'", 5: "'Payload#5'", 6: "'Payload#6'",
}
tmpl := template.Must(template.New("").Parse(t))
tmpl.Execute(os.Stdout, s)
var unused []int
for k, _ := range s.P {
if !strings.Contains(t, fmt.Sprintf("{{index .P %d}}", k)) {
unused = append(unused, k)
}
}
sort.Ints(unused)
fmt.Println("\nThe unused payloads have indices of :", unused)
}
- Output:
[[['Payload#1', 'Payload#2'], ['Payload#3', 'Payload#4', 'Payload#1'], 'Payload#5']] The unused payloads have indices of : [0 6]
Haskell
The problem is ideal for demonstrating the Functor and Traversable concepts.
Being a functor allows changing the contents of a complex data structure, keeping structure unchanged (via fmap function). This property already matches the template idea, but we can go further. The structure may be foldable as well, allowing aggregation of contents, using arbitrary monoid or aggregating function. Moreover foldable functor may be traversable, giving the ability to modify the complex structure contents with computations held in a given applicative or monadic context. All these properties are well defined, have solid theoretical background and are presented by classes: Functor, Foldable and Traversable.
For wide class of data structures instances of all these classes may be derived by the compiler in a sound unique way. The data template given in the task is exactly the case of a functor.
If we do not bother about neat textual representation, the definition of traversable nested template is as easy as following:
{-# language DeriveTraversable #-}
data Template a = Val a | List [Template a]
deriving ( Show
, Functor
, Foldable
, Traversable )
Functorial property of a data type is sufficient for defining the universal substitutor of keys/indices by payload data:
subst :: (Functor t, Eq i) => [(i,a)] -> t i -> t (Maybe a)
subst d = fmap (`lookup` d)
It is possible to turn any list of payloads into a map by simple helper function:
indexed :: [a] -> [(Int, a)]
indexed = zip [0..]
Now we can make substitutions to flat lists or nested templates:
t :: Template Int
t = List [ List [Val 1, Val 2]
, List [Val 3, Val 4, Val 10]
, Val 5]
payloads :: [(Int, String)]
payloads = [(i, "payload#"++show i) | i <- [0..6]]
λ> subst payloads [6,2,1,2]
[Just "payload#6",Just "payload#2",Just "payload#1",Just "payload#2"]
λ> sequence $ subst payloads [6,2,1,2]
Just ["payload#6","payload#2","payload#1","payload#2"]
λ> indexed "traverse"
[(0,'t'),(1,'r'),(2,'a'),(3,'v'),(4,'e'),(5,'r'),(6,'s'),(7,'e')]
λ> subst (indexed "traverse") [6,7,1,3,4,1]
[Just 's',Just 'e',Just 'r',Just 'v',Just 'e',Just 'r']
λ> sequence . subst (indexed "traverse") [6,7,1,3,4,1]
Just "server"
λ> subst payloads t
List [ List [Val (Just "payload#1"),Val (Just "payload#2")]
, List [Val (Just "payload#3"),Val (Just "payload#4"),Val Nothing]
, Val (Just "payload#5")]
λ> sequence $ subst payloads t
Nothing
In the last case not all substitutions could be done, so the whole substitution failed. The sequence function works for any traversable structures.
Foldable properties of templates (with a little help of monoids) allow to implement extended tasks.
unusedIndices :: (Foldable t, Eq i) => [(i,a)] -> t i -> [i]
unusedIndices d = foldMap unused
where unused i = maybe (pure i) (pure []) $ lookup i d
unusedData :: (Foldable t, Eq i) => [(i, a)] -> t i -> [(i,a)]
unusedData = foldr delete
where delete i = filter ((i /= ) . fst)
λ> unusedIndices payloads t [10] λ> unusedData payloads t [(0,"payload#0"),(6,"payload#6")]
J
Group substitution
Substitute=: ({.@:[)`(I.@:(= {:)~)`]}
NB. aside: demonstrate Substitution
] A =: ;/ i. 8
┌─┬─┬─┬─┬─┬─┬─┬─┐
│0│1│2│3│4│5│6│7│
└─┴─┴─┴─┴─┴─┴─┴─┘
] B =: ('xxxx' ; 3)
┌────┬─┐
│xxxx│3│
└────┴─┘
B Substitute A
┌─┬─┬─┬────┬─┬─┬─┬─┐
│0│1│2│xxxx│4│5│6│7│
└─┴─┴─┴────┴─┴─┴─┴─┘
B Substitute A , < 3
┌─┬─┬─┬────┬─┬─┬─┬─┬────┐
│0│1│2│xxxx│4│5│6│7│xxxx│
└─┴─┴─┴────┴─┴─┴─┴─┴────┘
Convert template to j structured data
NB. algorithm: evaluate after rewrite as a j sentence
NB. the result is an actual structured noun.
NB. because arrays are homogeneous in data type
NB. 1) data type validity for an operation takes place just once for all the values in the array which is fast
NB. 2) but a box next to a 5 is invalid.
NB. hence the payloads must be individually boxed as well.
] p =: ('(<''payload#',''')',~":)&>i.7
(<'payload#0')
(<'payload#1')
(<'payload#2')
(<'payload#3')
(<'payload#4')
(<'payload#5')
(<'payload#6')
NB. though they look scalar the words are vector
] t =: ;: CRLF -.~ 0 :0
[
[[1, 2],
[3, 4, 1],
5]]
)
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│[│[│[│1│,│2│]│,│[│3│,│4│,│1│]│,│5│]│]│
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
t =: ,: t NB. itemize t, then append successive substitutions
t =: t , ('(<' ; , '[') Substitute {: t
t =: t , ( ')' ; , ']') Substitute {: t
t
┌──┬──┬──┬─┬─┬─┬─┬─┬──┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│[ │[ │[ │1│,│2│]│,│[ │3│,│4│,│1│]│,│5│]│]│
├──┼──┼──┼─┼─┼─┼─┼─┼──┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
│(<│(<│(<│1│,│2│]│,│(<│3│,│4│,│1│]│,│5│]│]│
├──┼──┼──┼─┼─┼─┼─┼─┼──┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
│(<│(<│(<│1│,│2│)│,│(<│3│,│4│,│1│)│,│5│)│)│
└──┴──┴──┴─┴─┴─┴─┴─┴──┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
NB. finish the substitutions in one fell swoop
] SUBSTITUTIONS=: (<"1 p) ,. ,@":&.> i.7
┌──────────────┬─┐
│(<'payload#0')│0│
├──────────────┼─┤
│(<'payload#1')│1│
├──────────────┼─┤
│(<'payload#2')│2│
├──────────────┼─┤
│(<'payload#3')│3│
├──────────────┼─┤
│(<'payload#4')│4│
├──────────────┼─┤
│(<'payload#5')│5│
├──────────────┼─┤
│(<'payload#6')│6│
└──────────────┴─┘
[ t =: > (] , (Substitute {:))&.>/(<"1 SUBSTITUTIONS) , < t
┌──┬──┬──┬──────────────┬─┬──────────────┬─┬─┬──┬──────────────┬─┬──────────────┬─┬──────────────┬─┬─┬──────────────┬─┬─┐
│[ │[ │[ │1 │,│2 │]│,│[ │3 │,│4 │,│1 │]│,│5 │]│]│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│1 │,│2 │]│,│(<│3 │,│4 │,│1 │]│,│5 │]│]│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│1 │,│2 │)│,│(<│3 │,│4 │,│1 │)│,│5 │)│)│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│1 │,│2 │)│,│(<│3 │,│4 │,│1 │)│,│5 │)│)│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│1 │,│2 │)│,│(<│3 │,│4 │,│1 │)│,│(<'payload#5')│)│)│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│1 │,│2 │)│,│(<│3 │,│(<'payload#4')│,│1 │)│,│(<'payload#5')│)│)│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│1 │,│2 │)│,│(<│(<'payload#3')│,│(<'payload#4')│,│1 │)│,│(<'payload#5')│)│)│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│1 │,│(<'payload#2')│)│,│(<│(<'payload#3')│,│(<'payload#4')│,│1 │)│,│(<'payload#5')│)│)│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│(<'payload#1')│,│(<'payload#2')│)│,│(<│(<'payload#3')│,│(<'payload#4')│,│(<'payload#1')│)│,│(<'payload#5')│)│)│
├──┼──┼──┼──────────────┼─┼──────────────┼─┼─┼──┼──────────────┼─┼──────────────┼─┼──────────────┼─┼─┼──────────────┼─┼─┤
│(<│(<│(<│(<'payload#1')│,│(<'payload#2')│)│,│(<│(<'payload#3')│,│(<'payload#4')│,│(<'payload#1')│)│,│(<'payload#5')│)│)│
└──┴──┴──┴──────────────┴─┴──────────────┴─┴─┴──┴──────────────┴─┴──────────────┴─┴──────────────┴─┴─┴──────────────┴─┴─┘
] TASK=: ". ;:inv {: t NB. task output
┌───────────────────────────────────────────────────────────────────┐
│┌─────────────────────────────────────────────────────────────────┐│
││┌─────────────────────┬───────────────────────────────┬─────────┐││
│││┌─────────┬─────────┐│┌─────────┬─────────┬─────────┐│payload#5│││
││││payload#1│payload#2│││payload#3│payload#4│payload#1││ │││
│││└─────────┴─────────┘│└─────────┴─────────┴─────────┘│ │││
││└─────────────────────┴───────────────────────────────┴─────────┘││
│└─────────────────────────────────────────────────────────────────┘│
└───────────────────────────────────────────────────────────────────┘
Explorations
L. TASK NB. level
4
<S:1 TASK NB. spread boxing at level 1
┌─────────────────────┬───────────────────────────────┬─────────┐
│┌─────────┬─────────┐│┌─────────┬─────────┬─────────┐│payload#5│
││payload#1│payload#2│││payload#3│payload#4│payload#1││ │
│└─────────┴─────────┘│└─────────┴─────────┴─────────┘│ │
└─────────────────────┴───────────────────────────────┴─────────┘
[S:0 TASK NB. leaves
payload#1
payload#2
payload#3
payload#4
payload#1
payload#5
(".p) -. <S:0 TASK NB. unused payloads
┌─────────┬─────────┐
│payload#0│payload#6│
└─────────┴─────────┘
TASK
┌───────────────────────────────────────────────────────────────────┐
│┌─────────────────────────────────────────────────────────────────┐│
││┌─────────────────────┬───────────────────────────────┬─────────┐││
│││┌─────────┬─────────┐│┌─────────┬─────────┬─────────┐│payload#5│││
││││payload#1│payload#2│││payload#3│payload#4│payload#1││ │││
│││└─────────┴─────────┘│└─────────┴─────────┴─────────┘│ │││
││└─────────────────────┴───────────────────────────────┴─────────┘││
│└─────────────────────────────────────────────────────────────────┘│
└───────────────────────────────────────────────────────────────────┘
{:: TASK NB. map
┌─────────────────────────────────────────────────────┐
│┌───────────────────────────────────────────────────┐│
││┌─────────────────┬─────────────────────────┬─────┐││
│││┌───────┬───────┐│┌───────┬───────┬───────┐│┌┬┬─┐│││
││││┌┬┬─┬─┐│┌┬┬─┬─┐│││┌┬┬─┬─┐│┌┬┬─┬─┐│┌┬┬─┬─┐│││││2││││
│││││││0│0│││││0│1│││││││1│0│││││1│1│││││1│2│││└┴┴─┘│││
││││└┴┴─┴─┘│└┴┴─┴─┘│││└┴┴─┴─┘│└┴┴─┴─┘│└┴┴─┴─┘││ │││
│││└───────┴───────┘│└───────┴───────┴───────┘│ │││
││└─────────────────┴─────────────────────────┴─────┘││
│└───────────────────────────────────────────────────┘│
└─────────────────────────────────────────────────────┘
(0; 0; 0; 0) {:: TASK NB. indexing
payload#1
(0;0;2){::TASK
payload#5
Gerund representation
NB. finally, look at the representation of the substitution gerund
({.@:[)`(I.@:(= {:)~)`]
┌───────────┬──────────────────────────┬─┐
│┌──┬──────┐│┌─┬──────────────────────┐│]│
││@:│┌──┬─┐│││~│┌────────────────────┐││ │
││ ││{.│[││││ ││┌──┬───────────────┐│││ │
││ │└──┴─┘│││ │││@:│┌──┬──────────┐││││ │
│└──┴──────┘││ │││ ││I.│┌─┬──────┐│││││ │
│ ││ │││ ││ ││2│┌─┬──┐││││││ │
│ ││ │││ ││ ││ ││=│{:│││││││ │
│ ││ │││ ││ ││ │└─┴──┘││││││ │
│ ││ │││ ││ │└─┴──────┘│││││ │
│ ││ │││ │└──┴──────────┘││││ │
│ ││ ││└──┴───────────────┘│││ │
│ ││ │└────────────────────┘││ │
│ │└─┴──────────────────────┘│ │
└───────────┴──────────────────────────┴─┘
Java
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import java.util.stream.IntStream;
public final class NestedTemplateData {
public static void main(String[] args) {
List<String> payloads = IntStream.rangeClosed(0, 6).mapToObj( i -> "Payload#" + i ).toList();
String template = "[1, [[[1, 6]], [[3, 4, [17], 0], 5], 3], 9, [888], 9]";
System.out.println("Level Element");
processPayloads(template, payloads);
}
private static void processPayloads(String template, List<String> payloads) {
Set<String> unusedPayloads = new TreeSet<String>(payloads);
Set<String> missingPayloads = new TreeSet<String>();
int level = 0;
boolean levelChanged = false;
for ( int i = 0; i < template.length(); i++ ) {
String item = template.substring(i, i + 1);
switch ( item ) {
case "[" -> { level += 1; levelChanged = true; }
case "]" -> { level -= 1; levelChanged = true; }
default -> {
if ( isDigit(item) ) {
while ( isDigit(template.substring(i + 1, i + 2)) ) {
item += template.substring(i + 1, i + 2);
i += 1;
}
if ( levelChanged ) {
System.out.println();
System.out.print(String.format("%2s%s", level, " ".repeat(level)));
levelChanged = false;
}
String payload = "Payload#" + item;
if ( payloads.contains(payload) ) {
unusedPayloads.remove(payload);
} else {
missingPayloads.add(payload);
payload += " UNDEFINED";
}
System.out.print(payload + " ");
}
}
}
}
System.out.println(System.lineSeparator());
System.out.println(" Unused payloads: " + unusedPayloads);
System.out.println();
System.out.println(" Missing payloads: " + missingPayloads);
}
private static boolean isDigit(String item) {
return item.compareTo("0") >= 0 && item.compareTo("9") <= 0;
}
}
Level Element 1 Payload#1 4 Payload#1 Payload#6 4 Payload#3 Payload#4 5 Payload#17 UNDEFINED 4 Payload#0 3 Payload#5 2 Payload#3 1 Payload#9 UNDEFINED 2 Payload#888 UNDEFINED 1 Payload#9 UNDEFINED Unused payloads: [Payload#2] Missing payloads: [Payload#17, Payload#888, Payload#9]
jq
In this entry, we suppose that both the template and the payload are provided externally, both because that is normally how programs of the type under consideration are used, and because it is consistent with a "separation of concerns" principle. To keep things simple, let's put everything into a bash script.
For the main task, the key ideas here are (1) to use a JSON dictionary to store the integer-to-payload mapping; and (2) to use the built-in filter, `walk/1`, to instantiate the template.
#!/bin/bash
function template {
cat<<EOF
[
[[1, 2],
[3, 4, 1],
5 ]]
EOF
}
function payload {
for i in $(seq 0 6) ; do
echo Payload#$i
done
}
# Task 1: Template instantiation
payload | jq -Rn --argfile t <(template) '
([inputs] | with_entries(.key |= tostring)) as $dict
| $t
| walk(if type == "number" then $dict[tostring] else . end)
'
This produces the expected output, as also shown below.
For the second task, we could separately invoke jq similarly:
payload | jq -Rn --argfile t <(template) '
([inputs] | with_entries(.key |= tostring)) as $dict
| $dict[(($dict|keys_unsorted) - ([ $t | .. | numbers ] | unique | map(tostring) ))[]]
'
Or, if you prefer one invocation of jq for both tasks:
payload | jq -Rrn --argfile t <(template) '
([inputs] | with_entries(.key |= tostring)) as $dict
| $t
| walk(if type == "number" then $dict[tostring] else . end),
"\nUnused payload",
$dict[(($dict|keys_unsorted) - ([ $t | .. | numbers ] | unique | map(tostring) ))[]]
'
- Output:
[
[
[
"Payload#1",
"Payload#2"
],
[
"Payload#3",
"Payload#4",
"Payload#1"
],
"Payload#5"
]
]
Unused payload
Payload#0
Payload#6
Julia
The array structure needs to be specified as Any type of data, to allow assignment of String to positions in the array originally containing integers.
t = ([Any[Any[1, 2],
Any[3, 4, 1],
5]])
p = ["Payload#$x" for x in 0:6]
for (i, e) in enumerate(t)
if e isa Number
t[i] = p[e + 1]
else
for (j, f) in enumerate(e)
if f isa Number
e[j] = p[f + 1]
else
for (k, g) in enumerate(f)
if g isa Number
f[k] = p[g + 1]
end
end
end
end
end
end
show(t)
- Output:
Array{Any,1}[[Any["Payload#1", "Payload#2"], Any["Payload#3", "Payload#4", "Payload#1"], "Payload#5"]]
Mathematica /Wolfram Language
t = ToExpression[StringReplace["[[[1,2],[3,4,1],5]]", {"[" -> "{", "]" -> "}"}]];
p = "Payload#" <> ToString[#] & /@ Range[6];
Map[p[[#]] &, t, {-1}]
- Output:
{{{"Payload#1", "Payload#2"}, {"Payload#3", "Payload#4", "Payload#1"}, "Payload#5"}}
M2000 Interpreter
Font "Courier New"
cls
Module Checkit {
t=(((1,2), (3,4,1),5),) ' use (1,) for one item tuple
Tuple$ = lambda$ (a, feed$=" ") -> {
\\ we can pass a tuple of two arguments or two arguments
k=each(a)
lim=len(a)-1
res$="("
link a to a() ' to use type$()
while k {
if type$(a(k^))="mArray" then
res$+=Lambda$(array(a, k^),feed$+" ")
if k^<lim then
res$+={,
}+feed$
end if
else
res$+= trim$(str$(array(k)))
if k^<lim then res$+=", "
end if
}
=res$+")"
}
TotalPayload = lambda (a)->{
k=each(a)
link a to a()
res=0
while k {
if type$(a(k^))="mArray" then
res+=Lambda(a(k^))
else
res++
end if
}
=res
}
Payload = lambda (a,payloads as list)->{
misspayloads=List
used=list
inner=lambda misspayloads, p=1, payloads, used (a)-> {
k=each(a)
res=(,)
link a to a()
while k {
if type$(a(k^))="mArray" then
Append res, (Lambda(a(k^)),)
else
curpayload$="Payload#"+trim$(str$(array(k)))
if not exist(payloads, curpayload$) Then
if not exist(used, curpayload$) Then
Append res, ("missing#pos"+trim$(str$(p)),)
append misspayloads, p:=curpayload$
else
Append res, (curpayload$,)
End if
p++
else
Append res, (curpayload$,)
if exist(payloads, curpayload$) then
delete payloads, curpayload$
if not exist(used, curpayload$) then append used, curpayload$
end if
p++
end if
end if
}
=res
}
=inner(a), payloads, misspayloads
}
Expand$ =lambda$ (a as array, unused as list, misspayloads as list)-> {
Read ? space$
inner$= lambda$ (a, feed$=" ")->{
k=each(a)
lim=len(a)-1
res$="["
link a to a() ' to use type$()
while k {
if type$(a(k^))="mArray" then
res$+=Lambda$(array(a, k^),feed$+" ")
if k^<lim then
res$+={,
}+feed$
end if
else
res$+= "'"+array$(k)+"'"
if k^<lim then res$+=", "
end if
}
=res$+"]"
}
document unused$="Unused Payloads"+{
}
if len(unused)>0 then
un=each(unused)
while un {
unused$=" "+eval$(un)+{
}
}
else
unused$=" -"
end if
if len(misspayloads)>0 then
un=each(misspayloads)
lim=len(misspayloads)-1
document missing$="Missing in position: "+{
}
while un {
missing$=" "+eval$(un)+"-pos"+eval$(un,un^)+{
}
}
=inner$(a, space$)+{
}+unused$+missing$
Else
=inner$(a, space$)+{
} + unused$
End if
}
flush
Data t, (((1,10), (3,4,16),5),)
While not empty {
Read t
Document result$="Payloads:"+{
}
p=list
for i=0 to 6 {
Append p, "Payload#"+trim$(str$(i))
result$=" "+eval$(p, i)+{
}
}
result$="Template:"+{
}
result$=" "+Tuple$(t, " ")+{
}
result$="Template with Payloads:"+{
}
m=Payload(t, p)
result$=" "+Expand$(!m, " ")
clipboard result$
}
}
Checkit
Report clipboard$- Output:
Payloads:
Payload#0
Payload#1
Payload#2
Payload#3
Payload#4
Payload#5
Payload#6
Template:
(((1, 2),
(3, 4, 1),
5))
Template with Payloads:
[[['Payload#1', 'Payload#2'],
['Payload#3', 'Payload#4', 'Payload#1'],
'Payload#5']]
Unused Payloads
Payload#0
Payload#6
Payloads:
Payload#0
Payload#1
Payload#2
Payload#3
Payload#4
Payload#5
Payload#6
Template:
(((1, 10),
(3, 4, 16),
5))
Template with Payloads:
[[['Payload#1', 'missing#pos2'],
['Payload#3', 'Payload#4', 'missing#pos5'],
'Payload#5']]
Unused Payloads
Payload#0
Payload#6
Payload#2
Missing in position:
Payload#10-pos2
Payload#16-pos5
Nim
import macros,sugar,strformat
#macro to take a nested tuple and return a type
#e.g. (int,(int,int))=>(string,(string,string))
proc intstr(n: NimNode): NimNode =
if n.kind == nnkSym:
return ident("string")
result = nnkPar.newNimNode()
for i in 1..<n.len:
result.add(intstr(n[i]))
macro tuptype(t: typed): untyped = intstr(t.getType)
proc replace(t: tuple | int, p: openArray[string]): auto =
when t is int: (if t in 0..<p.len: p[t] else: "nil")
else:
var res: tuptype(t)
for k, v in t.fieldpairs:
#k will be 'Field0', so we convert to an integer index
res[k[^1].int - '0'.int] = replace(v, p)
return res
when isMainModule:
let p = collect(for i in 0..5: &"payload{i}")
let tplt1 = ((1,2),(3,4,1),5)
let tplt2 = ((1,2),(3,4,1),6)
echo replace(tplt1, p)
echo replace(tplt2, p)
- Output:
(("payload1", "payload2"), ("payload3", "payload4", "payload1"), "payload5")
(("payload1", "payload2"), ("payload3", "payload4", "payload1"), "nil")
Perl
Only handles nesting one level deep. Missing data is undef in the data structure, an empty string in the pretty-printer.
sub fulfill {
my @payloads;
push @payloads, 'Payload#' . $_ for 0..5;
my @result;
push @result, ref $_ eq 'ARRAY' ? [@payloads[@$_]] : @payloads[$_] for @{@_[0]};
return [@result];
}
sub formatted {
my $result;
$result .= ref $_ eq 'ARRAY' ? '[ "'. join('", "', @$_) . '" ], ' : qq{"$_"} for @{@_[0]};
return '[ ' . $result . " ]\n";
}
print formatted fulfill( [[1,2], [ 3,4,1], 5] );
print formatted fulfill( [[1,2], [10,4,1], 5] );
- Output:
[ [ "Payload#1", "Payload#2" ], [ "Payload#3", "Payload#4", "Payload#1" ], "Payload#5" ] [ [ "Payload#1", "Payload#2" ], [ "", "Payload#4", "Payload#1" ], "Payload#5" ]
Arbitrary Nesting
#!/usr/bin/perl
use strict; # https://rosettacode.org/wiki/Nested_templated_data
use warnings;
use Data::Dump 'dd';
my $t = [
[[1, 2],
[3, 4, 1],
5]];
my $p = [ map "Payload#$_", 0 .. 6 ];
dd { 'template' => $t, 'payload' => $p };
my $output = filltemplate( $t, $p );
dd { 'output' => $output };
sub filltemplate
{
my ($t, $p) = @_;
return ref $t eq 'ARRAY' ? [ map filltemplate($_, $p), @$t ] : $p->[$t];
}
- Output:
{
payload => [
"Payload#0",
"Payload#1",
"Payload#2",
"Payload#3",
"Payload#4",
"Payload#5",
"Payload#6",
],
template => [[[1, 2], [3, 4, 1], 5]],
}
{
output => [
[
["Payload#1", "Payload#2"],
["Payload#3", "Payload#4", "Payload#1"],
"Payload#5",
],
],
}
Phix
This task almost feels custom-built for Phix.
Note that Phix indexes are normally 1-based, but to better match the task description those in the templates are 0-based
constant template = { { { 1, 2 }, { 3, 4, 1, }, 5 } }, template2 = { { { 1, 2 }, { 10, 4, 1 }, 5 } }, payload = {"Payload#0", "Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6"} sequence unused = repeat(true,length(payload)), missing = {} function fill(object t, sequence p) if integer(t) then if t>=length(p) then if not find(t,missing) then missing &= t end if return sprintf("*** index error (%d>%d) ***",{t,length(p)-1}) end if unused[t+1] = false return p[t+1] end if for i=1 to length(t) do t[i] = fill(t[i],p) end for return t end function ppOpt({pp_Nest,2}) pp(fill(template,payload)) pp(fill(template2,payload)) sequence idx = {} for i=1 to length(unused) do if unused[i] then idx &= i-1 end if end for printf(1,"\nThe unused payloads have indices of :%s\n", {sprint(idx)}) if length(missing) then printf(1,"Missing payloads: %s\n", {sprint(missing)}) end if
{{{"Payload#1", "Payload#2"},
{"Payload#3", "Payload#4", "Payload#1"},
"Payload#5"}}
{{{"Payload#1", "Payload#2"},
{"*** index error (10>6) ***", "Payload#4", "Payload#1"},
"Payload#5"}}
The unused payloads have indices of :{0,6}
Missing payloads: {10}
Python
This uses f-strings from Python3.6+.
I choose to use nested tuples for the template structure, and a dict to map integer indices to corresponding payload strings.
A distinctive string is used to indicate missing payloads.
from pprint import pprint as pp
class Template():
def __init__(self, structure):
self.structure = structure
self.used_payloads, self.missed_payloads = [], []
def inject_payload(self, id2data):
def _inject_payload(substruct, i2d, used, missed):
used.extend(i2d[x] for x in substruct if type(x) is not tuple and x in i2d)
missed.extend(f'??#{x}'
for x in substruct if type(x) is not tuple and x not in i2d)
return tuple(_inject_payload(x, i2d, used, missed)
if type(x) is tuple
else i2d.get(x, f'??#{x}')
for x in substruct)
ans = _inject_payload(self.structure, id2data,
self.used_payloads, self.missed_payloads)
self.unused_payloads = sorted(set(id2data.values())
- set(self.used_payloads))
self.missed_payloads = sorted(set(self.missed_payloads))
return ans
if __name__ == '__main__':
index2data = {p: f'Payload#{p}' for p in range(7)}
print("##PAYLOADS:\n ", end='')
print('\n '.join(list(index2data.values())))
for structure in [
(((1, 2),
(3, 4, 1),
5),),
(((1, 2),
(10, 4, 1),
5),)]:
print("\n\n# TEMPLATE:")
pp(structure, width=13)
print("\n TEMPLATE WITH PAYLOADS:")
t = Template(structure)
out = t.inject_payload(index2data)
pp(out)
print("\n UNUSED PAYLOADS:\n ", end='')
unused = t.unused_payloads
print('\n '.join(unused) if unused else '-')
print(" MISSING PAYLOADS:\n ", end='')
missed = t.missed_payloads
print('\n '.join(missed) if missed else '-')
- Output:
##PAYLOADS:
Payload#0
Payload#1
Payload#2
Payload#3
Payload#4
Payload#5
Payload#6
# TEMPLATE:
(((1, 2),
(3, 4, 1),
5),)
TEMPLATE WITH PAYLOADS:
((('Payload#1', 'Payload#2'),
('Payload#3', 'Payload#4', 'Payload#1'),
'Payload#5'),)
UNUSED PAYLOADS:
Payload#0
Payload#6
MISSING PAYLOADS:
-
# TEMPLATE:
(((1, 2),
(10, 4, 1),
5),)
TEMPLATE WITH PAYLOADS:
((('Payload#1', 'Payload#2'),
('??#10', 'Payload#4', 'Payload#1'),
'Payload#5'),)
UNUSED PAYLOADS:
Payload#0
Payload#3
Payload#6
MISSING PAYLOADS:
??#10
R
This is a fairly straightforward implementation in R using a recursive function. It's not likely the most efficient in the world.
fill_template <- function(x, template, prefix = "Payload#") {
for (i in seq_along(template)) {
temp_slice <- template[[i]]
if (is.list(temp_slice)) {
template[[i]] <- fill_template(x, temp_slice, prefix)
} else {
temp_slice <- paste0(prefix, temp_slice)
template[[i]] <- x[match(temp_slice, x)]
}
}
return(template)
}
library("jsonlite") # for printing the template and result
template <- list(list(c(1, 2), c(3, 4), 5))
payload <- paste0("Payload#", 0:6)
result <- fill_template(payload, template)
cat(sprintf(
"Template\t%s\nPayload\t%s\nResult\t%s",
toJSON(template, auto_unbox = TRUE),
toJSON(payload, auto_unbox = TRUE),
toJSON(result, auto_unbox = TRUE)
))
- Output:
Template [[[1,2],[3,4],5]] Payload ["Payload#0","Payload#1","Payload#2","Payload#3","Payload#4","Payload#5","Payload#6"] Result [[["Payload#1","Payload#2"],["Payload#3","Payload#4"],"Payload#5"]]
Racket
rackunit is used to test the outcomes of template application. So no output indicates expectations met (i.e. success).
#lang racket
(define current-not-found-handler
(make-parameter (λ (idx max) (raise-range-error 'substitute-template "integer?" "" idx 0 max))))
(define ((substitute-template template) payloads)
(define match-function
(match-lambda
[(? nonnegative-integer? idx) #:when (< idx (length payloads)) (list-ref payloads idx)]
[(? nonnegative-integer? idx) ((current-not-found-handler) idx (sub1 (length payloads)))]
[(list (app match-function substitutions) ...) substitutions]))
(match-function template))
(module+ test
(require rackunit)
(define substitute-in-t (substitute-template '(((1 2)
(3 4 1)
5))))
(define p '(Payload#0 Payload#1 Payload#2 Payload#3 Payload#4 Payload#5 Payload#6))
(check-equal? (substitute-in-t p)
'(((Payload#1 Payload#2)
(Payload#3 Payload#4 Payload#1)
Payload#5)))
(define out-of-bounds-generating-template-substitution (substitute-template '(7)))
(check-exn exn:fail:contract? (λ () (out-of-bounds-generating-template-substitution p)))
(parameterize ((current-not-found-handler (λ (idx max) (format "?~a" idx))))
(check-equal? (out-of-bounds-generating-template-substitution p) '("?7"))))
Raku
(formerly Perl 6)
Explicitly not using strings, using one data structure to fill in another. Since it isn't a string, the output format removes the newlines from the template; line feed (white space in general) isn't particularly significant in Raku data structures. It does preserve the nesting though. In the second example, payload "buckets" that don't exist result in an undefined value being inserted; by default: Any.
say join "\n ", '##PAYLOADS:', |my @payloads = 'Payload#' X~ ^7;
for [
(((1, 2),
(3, 4, 1),
5),),
(((1, 2),
(10, 4, 1),
5),)
] {
say "\n Template: ", $_.raku;
say "Data structure: { @payloads[|$_].raku }";
}
- Output:
##PAYLOADS:
Payload#0
Payload#1
Payload#2
Payload#3
Payload#4
Payload#5
Payload#6
Template: $(((1, 2), (3, 4, 1), 5),)
Data structure: ((("Payload#1", "Payload#2"), ("Payload#3", "Payload#4", "Payload#1"), "Payload#5"),)
Template: $(((1, 2), (10, 4, 1), 5),)
Data structure: ((("Payload#1", "Payload#2"), (Any, "Payload#4", "Payload#1"), "Payload#5"),)
Refal
$ENTRY Go {
, (((1 2) (3 4 1) 5)): e.Template
, "Payload#0" "Payload#1" "Payload#2" "Payload#3"
"Payload#4" "Payload#5" "Payload#6": e.Payload
= <Prout <Subst (e.Payload) e.Template>>;
};
Subst {
(e.P) = ;
(e.P) s.I e.X = <Item s.I e.P> <Subst (e.P) e.X>;
(e.P) (e.X) e.Y = (<Subst (e.P) e.X>) <Subst (e.P) e.Y>;
};
Item {
0 t.I e.X = t.I;
s.N t.I e.X = <Item <- s.N 1> e.X>;
};- Output:
(((Payload#1 Payload#2 )(Payload#3 Payload#4 Payload#1 )Payload#5 ))
REXX
version 1
/* REXX */
tok.=''
Do i=0 To 6
tok.i="'Payload#"i"'"
End
t1='[[[1,2],[3,4,1],5]]'
t2='[[[1,6],[3,4,7,0],5]]'
Call transform t1
Call transform t2
Exit
transform:
Parse Arg t 1 tt
/* http://rosettacode.org/wiki/Nested_templated_data */
/*
[[['Payload#1', 'Payload#2'],
['Payload#3', 'Payload#4', 'Payload#1'],
'Payload#5']]
*/
lvl=0
n.=0
o=''
w=''
used.=0
Do While t<>''
Parse Var t c +1 1 c3 +3 1 c2 +2
u=' '
v=' '
Select
When c3='],[' Then Do
o=o' '
w=w' '
t=substr(t,3)
End
When c2='],' Then Do
o=o' '
w=w' '
t=substr(t,2)
lvl=lvl-1
End
When c='[' Then
lvl=lvl+1
When c=']' Then
lvl=lvl-1
When c=',' Then
Nop
Otherwise Do
u=lvl
v=c
End
End
t=substr(t,2)
o=o||u
w=w||v
End
Say 'Template' tt
Do i=1 By 1 While w<>''
If i=1 Then Do
w=substr(w,4)
p=pos(' ',w)
Call o '[[['cont(left(w,p-1))'],'
w=substr(w,p)
End
Else Do
If left(w,3)='' Then Do
w=substr(w,4)
p=pos(' ',w)
Call o ' ['cont(left(w,p-1))'],'
w=substr(w,p)
End
Else Do
w=substr(w,3)
p=pos(' ',w)
Call o ' 'cont(left(w,p-1))']]'
w=substr(w,p)
End
End
End
Do i=0 To 6
If used.i=0 Then Say 'Payload' i 'not used'
End
Call o ' '
Return
o: Say arg(1)
Return
cont: Procedure Expose tok. used.
Parse Arg list
res=''
Do while list>''
Parse Var list i list
res= res tok(i)','
End
res=strip(res)
res=strip(res,'T',',')
Return res
tok: Procedure Expose tok. used.
Parse Arg i
If tok.i<>'' Then Do
used.i=1
Return tok.i
End
Else
Return "'Payload#" i "not defined'"
- Output:
Template [[[1,2],[3,4,1],5]] [[['Payload#1', 'Payload#2'], ['Payload#3', 'Payload#4', 'Payload#1'], 'Payload#5']] Payload 0 not used Payload 6 not used Template [[[1,6],[3,4,7,0],5]] [[['Payload#1', 'Payload#6'], ['Payload#3', 'Payload#4', 'Payload# 7 not defined', 'Payload#0'], 'Payload#5']] Payload 2 not used
version 2
/* REXX */
tok.=''
Do i=0 To 6
tok.i="'Payload#"i"'"
End
t1='[[[1,2],[ 3,4,1],5]]'
t2='1[[[1,6]],[[3,4[7] 0],5]3]9 [8] 9'
Call transform t1
Call transform t2
Exit
transform:
Parse Arg t 1 tt
t=space(t,0)
lvl=0
t.=0
used.=0
undefined=''
Do While t<>''
Parse Var t c +1 t
Select
When c='[' Then
lvl=lvl+1
When c=']' Then
lvl=lvl-1
When c=',' Then
Nop
Otherwise Do
t=c||t
p1=pos(']',t)
p2=pos('[',t)
Select
When p2=0 Then p=p1
When p1=0 Then p=p2
Otherwise p=min(p1,p2)
End
If p=0 Then Do
Call mem lvl': >'t'<'
t=''
End
Else Do
Call mem lvl': >'left(t,p-1)'<'
t=substr(t,p)
End
End
End
End
Call show
Return
mem:
z=t.0+1
t.z=arg(1)
t.0=z
Return
show:
Say tt
Say 'lvl Element'
Do i=1 To t.0
Parse Var t.i lvl ':' '>' cont '<'
ol=right(lvl,3) copies(' ',lvl*3)cont(cont)
Say ol
End
Do i=0 To 6
If used.i=0 Then Say 'Payload' i 'not used'
End
Do While undefined>''
Parse Var undefined i undefined
Say 'Payload' i 'is not defined'
End
Call o ' '
Return
cont: Procedure Expose tok. used. undefined
Parse Arg list
list=translate(list,' ',',')
res=''
Do while list>''
Parse Var list i list
res= res tok(i)','
End
res=strip(res)
res=strip(res,'T',',')
Return res
tok: Procedure Expose tok. used. undefined
Parse Arg i
If tok.i<>'' Then Do
used.i=1
Return tok.i
End
Else Do
If wordpos(i,undefined)=0 Then
undefined=undefined i
Return "'Payload#"i "not defined'"
End
o: Say arg(1)
Return
- Output:
[[[1,2],[ 3,4,1],5]] lvl Element 3 'Payload#1', 'Payload#2' 3 'Payload#3', 'Payload#4', 'Payload#1' 2 'Payload#5' Payload 0 not used Payload 6 not used 1[[[1,6]],[[3,4[7] 0],5]3]9 [8] 9 lvl Element 0 'Payload#1' 3 'Payload#1', 'Payload#6' 3 'Payload#3', 'Payload#4' 4 'Payload#7 not defined' 3 'Payload#0' 2 'Payload#5' 1 'Payload#3' 0 'Payload#9 not defined' 1 'Payload#8 not defined' 0 'Payload#9 not defined' Payload 2 not used Payload 7 is not defined Payload 9 is not defined Payload 8 is not defined
SETL
program substitution;
template := [[[1,2],[3,4,1],5]];
payload := {
[0,"Payload#0"], [1,"Payload#1"], [2,"Payload#2"], [3,"Payload#3"],
[4,"Payload#4"], [5,"Payload#5"], [6,"Payload#6"]
};
print(subst(template, payload));
proc subst(template, payload);
if not is_tuple(template) then
return(payload(template));
end if;
result := [];
loop for item in template do
result with:= subst(item, payload);
end loop;
return result;
end proc;
end program;- Output:
[[['Payload#1' 'Payload#2'] ['Payload#3' 'Payload#4' 'Payload#1'] 'Payload#5']]
VBA
VBA allows arrays of variant, so the elements of an array can be both scalars as arrays of different sizes.
Public Sub test()
Dim t(2) As Variant
t(0) = [{1,2}]
t(1) = [{3,4,1}]
t(2) = 5
p = [{"Payload#0","Payload#1","Payload#2","Payload#3","Payload#4","Payload#5","Payload#6"}]
Dim q(6) As Boolean
For i = LBound(t) To UBound(t)
If IsArray(t(i)) Then
For j = LBound(t(i)) To UBound(t(i))
q(t(i)(j)) = True
t(i)(j) = p(t(i)(j) + 1)
Next j
Else
q(t(i)) = True
t(i) = p(t(i) + 1)
End If
Next i
For i = LBound(t) To UBound(t)
If IsArray(t(i)) Then
Debug.Print Join(t(i), ", ")
Else
Debug.Print t(i)
End If
Next i
For i = LBound(q) To UBound(q)
If Not q(i) Then Debug.Print p(i + 1); " is not used"
Next i
End Sub
- Output:
Payload#1, Payload#2 Payload#3, Payload#4, Payload#1 Payload#5 Payload#0 is not used Payload#6 is not used
Wren
import "./set" for Set
import "./sort" for Sort
var withPayload // recursive function
withPayload = Fn.new { |template, payload, used|
return template.map { |item|
if (item is List) {
return withPayload.call(item, payload, used)
} else {
used.add(item)
return "'%(payload[item])'"
}
}.toList
}
var p = ["Payload#0", "Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6"]
var t = [[[1, 2], [3, 4, 1], 5]]
var used = []
System.print(withPayload.call(t, p, used))
System.print()
var unused = Set.new(0..6).except(Set.new(used)).toList
Sort.insertion(unused)
System.print("The unused payloads have indices of %(unused).")
- Output:
[[['Payload#1', 'Payload#2'], ['Payload#3', 'Payload#4', 'Payload#1'], 'Payload#5']] The unused payloads have indices of [0, 6].
zkl
Formatting is lost as zkl is format free. A pretty printer could be written but the tasks asks for a data structure.
Void is used as a marker for an unknown payload.
var payloads=[1..6].pump(List,"Payload#".append);
fcn get(n){ try{ payloads[n - 1] }catch{ Void } }
fcn sub(list){ list.pump(List, fcn(n){ if(n.isType(List)) sub(n) else get(n) }) }foreach p in (T(
T(T(T(1, 2),
T(3, 4, 1),
5),),
T(T(T(1, 2),
T(10,4, 1),
5),))){
println(" Template: %s\nData structure: %s".fmt(p,sub(p)));
}- Output:
Template: L(L(L(1,2),L(3,4,1),5))
Data structure: L(L(L("Payload#1","Payload#2"),L("Payload#3","Payload#4","Payload#1"),"Payload#5"))
Template: L(L(L(1,2),L(10,4,1),5))
Data structure: L(L(L("Payload#1","Payload#2"),L(Void,"Payload#4","Payload#1"),"Payload#5"))
Categories:
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