Array/Since 1.38.0

unzip

Separates an array of pairs into two arrays containing the first and second values respectively.

unzip(array):[T[], U[]]

Parameters

array[T, U][]required

An array of two-element tuples to separate into two arrays.

Returns

[T[], U[]]

A tuple containing two arrays: the first contains all first values, and the second contains all second values.

Examples

Basic usage

Separate pairs of numbers into two arrays.

TypeScript

import { unzip } from "@cyref/js";

const pairs: [number, number][] = [
  [1, 10],
  [2, 20],
  [3, 30],
];

const result = unzip(pairs);

console.log(result);
// [
//   [1, 2, 3],
//   [10, 20, 30],
// ]

With different types

The two values in each pair can have different types.

TypeScript

import { unzip } from "@cyref/js";

const pairs: [string, number][] = [
  ["Amir", 20],
  ["Sara", 25],
  ["Reza", 30],
];

const result = unzip(pairs);

console.log(result);
// [
//   ["Amir", "Sara", "Reza"],
//   [20, 25, 30],
// ]

With objects

Tuple values can also contain objects.

TypeScript

import { unzip } from "@cyref/js";

const pairs: [string, { active: boolean }][] = [
  ["Amir", { active: true }],
  ["Sara", { active: false }],
];

const result = unzip(pairs);

console.log(result);
// [
//   ["Amir", "Sara"],
//   [
//     { active: true },
//     { active: false },
//   ],
// ]

Empty array

An empty array produces two empty arrays.

TypeScript

import { unzip } from "@cyref/js";

const result = unzip([]);

console.log(result);
// [[], []]

Built with@cyref/js·Official documentation