find

Find first value passing a test (default order).

Alternatives: find, findAll.
Similar: find, search, searchValue.

function find(x, ft)
// x:  a map
// ft: test function (v, k, x)

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

var x = new Map([['a', 1], ['b', 2], ['c', 3], ['d', 4]]);
map.find(x, v => v % 2 === 0);
// → 2                           ^

map.find(x, v => v % 8 === 0);
// → undefined

References

• Data.List.find: Haskell
• List-Extra.find: elm
• Array.find: sugarjs