Loops/Continue: Difference between revisions
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Line 804:
output += ", ";
}</lang>
Stepping back from any assumption that repetitive patterns of computation necessarily entail iteration, and using a functional idiom of JavaScript, we can make the value of one or more subexpressions in a ''reduce()'' fold conditional on any special cases that we define.
For example:
<lang JavaScript>function rng(n) {
return n ? rng(n - 1).concat(n) : [];
}
console.log(
rng(10).reduce(
function (a, x) {
return a + x.toString() + (x % 5 ? ', ' : '\n');
}, ''
)
);</lang>
Output:
<lang JavaScript>1, 2, 3, 4, 5
6, 7, 8, 9, 10
</lang>
=={{header|jq}}==
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