partitionAs

Segregate entries by similarity.

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 } }

References

• Data.List.partition: Haskell