isOnce

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Subhajit Sahu edited this page Feb 3, 2021 · 15 revisions

Check if an iterable can iterated only once.

Alternatives: is, isList, isIterator, isOnce, isMany.
Similar: isOnce, isMany, toMany.

function isOnce(x)
// x: an iterable

const xiterable = require('extra-iterable');

var x = [1, 2, 3, 4];
xiterable.isOnce(x);
// → false

xiterable.isOnce(x.xiterable.values());
// → true