reduceRight - nodef/extra-array GitHub Wiki

Reduce values from right, to a single value.

Alternatives: reduce, reduceRight. Similar: map, filter, reject, reduce.

function reduceRight(x, fr, acc?)
// x:   an array
// fr:  reduce function (acc, v, i, x)
// acc: initial value

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

var x = [1, 2, 3, 4];
xarray.reduceRight(x, (acc, v) => acc+v);
// → 10

xarray.reduceRight(x, (acc, v) => acc+v, 100);
// → 110

References

• Data.List.reduce() : Haskell
• Array.reduce() : MDN Web Docs
• iterable_reduce() : PHP
• Array.reduceRight() : Sugar.js