findRight (original) (raw)

Find last value passing a test.

Alternatives: find, findRight, findAll.
Similar: search, scan, find.

function findRight(x, ft) // x: an array // ft: test function (v, i, x)

const xarray = require('extra-array');

var x = [1, 2, 3, 4, 5]; xarray.findRight(x, v => v % 2 == 0); // → 4 ^

xarray.findRight(x, v => v % 2 == 1); // → 5 ^

References

• Data.List.find() : Haskell
• List-Extra.find() : Elm
• _.findLastIndex() : Lodash