searchValue

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Subhajit Sahu edited this page Feb 3, 2021 · 16 revisions

Find first index of a value.

Alternatives: searchValue, searchValueRight, searchValueAll.
Similar: values, hasValue, searchValue.
Similar: search, [scan], find.

function searchValue(x, v, fc, fm)
// x:  an iterable
// v:  search value
// fc: compare function (a, b)
// fm: map function (v, i, x)

const xiterable = require('extra-iterable');

var x = [1, 2, 3, 2, 5];
xiterable.searchValue(x, 2);
// → 1      ^

var x = [1, -2, 3, 2, 5];
xiterable.searchValue(x, 2, (a, b) => Math.abs(a) - Math.abs(b));
// → 1       ^

var x = [1, -2, 3, 2, 5];
xiterable.searchValue(x, 2, null, v => Math.abs(v));
// → 1       ^

References