partitionAs

Segregates values by similarity. 📦 😺 🏃 📼 🌔 📜 📰 📘

Alternatives: partition, partitionAs.

entries.partitionAs(x, fm);
// x:  entries
// fm: map function (v, k, x)

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

var x = [["a", 1], ["b", 2], ["c", 3], ["d", 4]];
entries.partitionAs(x, v => v % 2 == 0);
// Map(2) {
//   false => Map(2) { "a" => 1, "c" => 3 },
//   true => Map(2) { "b" => 2, "d" => 4 }
// }

var x = [["a", 1], ["b", 2], ["c", 3], ["d", 4], ["e", 5]];
entries.partitionAs(x, v => v % 3);
// Map(3) {
//   1 => Map(2) { "a" => 1, "d" => 4 },
//   2 => Map(2) { "b" => 2, "e" => 5 },
//   0 => Map(1) { "c" => 3 }
// }

References

• Data.List.partition: Haskell