count

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Subhajit Sahu edited this page May 17, 2020 · 24 revisions

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

Alternatives: count, countAs.

iterable.count(x, fn, [ths]);
// x:   an iterable
// fn:  test function (v, i, x)
// ths: this argument

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