partitionAs - nodef/extra-object GitHub Wiki
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Similar: partition, partitionAs. Similar: partition, chunk.
function partitionAs(x, fm)
// x: an object
// fm: map function (v, k, x)
const object = require('extra-object');
var x = {a: 1, b: 2, c: 3, d: 4};
object.partitionAs(x, v => v % 2 == 0);
// → Map(2) { false => { a: 1, c: 3 }, true => { b: 2, d: 4 } }
var x = {a: 1, b: 2, c: 3, d: 4, e: 5};
object.partitionAs(x, v => v % 3);
// → Map(3) { 1 => { a: 1, d: 4 }, 2 => { b: 2, e: 5 }, 0 => { c: 3 } }