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Nested templated data: Difference between revisions
→{{header|zkl}}: added code
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Line 173:
=={{header|zkl}}==
Formatting is lost as zkl is format free. A pretty printer could be written but
<lang zkl></lang>▼
the tasks asks for a data structure.
Void is used as a marker for an unknown payload.
<lang zkl>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) }) }
fcn template(list){ list.pump(List,sub) }</lang>
<lang zkl>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)));
{{out}}
<pre>
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),L())
Data structure: L(L(L("Payload#1","Payload#2"),L(Void,"Payload#4","Payload#1"),"Payload#5"),L())
</pre>
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