Decorate-sort-undecorate idiom: Difference between revisions

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=={{header|Wren}}==

Wren doesn't normally print string lists in "quoted" form though I've added the quotes here to be consistent with the other

solutions.

It's not specified how words of equal length are to be sorted. The standard sort() method used here (quicksort under the hood) is unstable and so the sort order for such words is not guaranteed.

<syntaxhighlight lang="ecmascript">var schwartzian = Fn.new { |a, f|

System.print(a.map { |e| [e, f.call(e)] } // decorate

.toList

.sort { |p, q| p[1] < q[1] } // sort

.map { |p| "\"%(p[0])\"" } // undecorate

.toList)

}

var words = ["Rosetta", "Code", "is", "a", "programming", "chrestomathy", "site"]

var length = Fn.new { |s| s.count }

schwartzian.call(words, length)</syntaxhighlight>

{{out}}

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["a", "is", "site", "Code", "Rosetta", "programming", "chrestomathy"]