@extra-lists/count v2.2.10

Counts values which satisfy a test. :package: :smiley_cat: :running: :vhs: :moon: :scroll: :newspaper: :blue_book:

Alternatives: count, countAs.

This is part of package extra-lists.

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

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

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

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

References

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