Finds index of first value passing a test. :running: :vhs: :package: :moon: :ledger:
Alternatives: findIndex, findIndices.
Similar: find, findIndex.
This is part of package extra-iterable.
iterable.findIndex(x, fn, [ths]);
// x: an iterable
// fn: test function (v, i, x)
// ths: this argument
// --> index of value, -1 if not foundconst iterable = require('extra-iterable');
var x = [1, 2, 3, 4, 5];
iterable.findIndex(x, v => v % 2 == 0);
// 1 ^
iterable.findIndex(x, v => v % 2 == 1);
// 0 ^