count

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Subhajit Sahu edited this page Feb 3, 2021 · 24 revisions

Counts values which satisfy a test. 🏃 📼 📦 🌔 📒

Alternatives: count, countAs.
Similar: count, partition.

iterable.count(x, ft);
// x:  an iterable
// ft: test function (v, i, x)

const iterable = require("extra-iterable");

var x = [1, 1, 2, 2, 4];
iterable.count(x, v => v % 2 === 1);
// 2

iterable.count(x, v => v % 2 === 0);
// 3

References