unzip

Problem

You have an array of tuples and need to transpose it into separate arrays of columns — the inverse of zip.

Solution

Use unzip(rows) to transpose a [row, row, ...] matrix into column arrays.

import { unzip } from '@vielzeug/arsenal';

unzip([
  ['a', 1],
  ['b', 2],
  ['c', 3],
]);
// [['a', 'b', 'c'], [1, 2, 3]]

Pitfalls

• All rows must have the same length; jagged input produces undefined in shorter rows.

Related

• zip