reduce - nodef/extra-entries GitHub Wiki

Reduce values of entries to a single value.

Similar: map, reduce, filter, filterAt, reject, rejectAt.

function reduce(x, fr, acc?)
// x:   entries
// fr:  reduce function (acc, v, k, x)
// acc: initial value

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

var x = ["a", 1], ["b", 2], ["c", 3], ["d", 4](/nodef/extra-entries/wiki/"a",-1],-["b",-2],-["c",-3],-["d",-4);
entries.reduce(x, (acc, v) => acc+v);
// → 10

entries.reduce(x, (acc, v) => acc+v, 100);
// → 110

References