@extra-object/count

Counts values which satisfy a test. [:running:] [:vhs:] [:package:] [:moon:] [:ledger:] > Alternatives: [count], [countAs]. > This is part of package extra-object.

Usage no npm install needed!

<script type="module">
  import extraObjectCount from 'https://cdn.skypack.dev/@extra-object/count';
</script>

README

Counts values which satisfy a test. :running: :vhs: :package: :moon: :ledger:

Alternatives: count, countAs.
This is part of package extra-object.

object.count(x, ft);
// x:  an object
// ft: test function (v, k, x)

const object = require('extra-object');

var x = {a: 1, b: 1, c: 2, d: 2, e: 4};
object.count(x, v => v % 2 === 1);
// 2

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

references

List-Extra.count: elm
_.countBy: lodash
Array.count: sugarjs
count-iterable-values: @zeke