count

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Subhajit Sahu edited this page Feb 4, 2021 · 14 revisions

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

Alternatives: count, countAs.

entries.count(x, ft);
// x:  a map
// ft: test function (v, k, x)

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

var x = [["a", 1], ["b", 1], ["c", 2], ["d", 2], ["e", 4]];
entries.count(x, v => v % 2 === 1);
// 2

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

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