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isOnce
Subhajit Sahu edited this page May 10, 2020
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15 revisions
Checks if iterable starts with a prefix. 🏃 📼 📦 🌔
Alternatives: [is], [isList], [isIterator], isOnce, isMany.
Similar: isOnce, isMany, many.
iterable.isPrefix(x, y, [fn]);
// x: an iterable
// y: prefix?
// fn: compare function (a, b)
const iterable = require('extra-iterable');
var x = [1, 2, 3, 4];
iterable.isOnce(x);
// false
iterable.isOnce(x.values());
// true