@extra-array/filter-update

Keeps values which pass a test.

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Keeps values which pass a test. :package: :smileycat: :running: :vhs: :moon: :scroll: :newspaper: :bluebook:
Alternatives: filter, filter$, filterAt.
Similar: map, filter, reject, reduce, accumulate.

This is part of package extra-array.



array.filter$(x, ft);
// x:  an array (updated)
// ft: test function (v, i, x)
// → x

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

var x = [1, 2, 3, 4, 5];
array.filter$(x, v => v % 2 === 1);
// [ 1, 3, 5 ]

x;
// [ 1, 3, 5 ]

var x = [1, 2, 3, 4, 5];
array.filter$(x, v => v % 2 === 0);
// [ 2, 4 ]



References