searchValue - nodef/extra-map GitHub Wiki
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](/nodef/extra-map/wiki/'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' ^