findRight

Jump to bottom

wolfram77 edited this page Mar 25, 2020 · 28 revisions

Finds index of rightmost value passing the test.

Alternatives: [left], [right], [all].

array.findRight(x, fn, [ths]);
// x:   an array
// fn:  test function (v, i, x)
// ths: this argument
// --> index of value, -1 if not found

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

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

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

references