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filter
Subhajit Sahu edited this page Feb 3, 2021
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27 revisions
Keep the values which pass a test.
Alternatives: filter, filterAt.
Similar: map, filter, reject, reduce, accumulate.
function filter(x, ft)
// x: an iterable
// ft: test function (v, i, x)const xiterable = require('extra-iterable');
var x = [1, 2, 3, 4, 5];
[...xiterable.filter(x, v => v % 2 === 1)];
// → [1, 3, 5]
[...xiterable.filter(x, v => v % 2 === 0)];
// → [2, 4]