searchValue

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Subhajit Sahu edited this page Dec 5, 2022 · 12 revisions

Find a key with given value.

Alternatives: searchValue, searchValueAll.
Similar: search, searchValue.

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

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

var x = new Map([['a', 1], ['b', -2], ['c', 3], ['d', 2], ['e', 5]]);
map.searchValue(x, 2);
// → 'd'                                          ^

map.searchValue(x, 2, (a, b) => Math.abs(a) - Math.abs(b));
// → 'b'                     ^

map.searchValue(x, 2, null, v => Math.abs(v));
// → 'b'                     ^

References