Unzip a zipped array (i.e., a nested array of tuples).
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> Unzip a [zipped array][@stdlib/utils/zip] (i.e., a nested array of tuples).
``bash`
npm install @stdlib/utils-unzip
`javascript`
var unzip = require( '@stdlib/utils-unzip' );
#### unzip( arr\[, idx] )
Unzips a [zipped array][@stdlib/utils/zip] (i.e., a nested array of tuples).
`javascript
var arr = [ [ 1, 'a', 3 ], [ 2, 'b', 4 ] ];
var out = unzip( arr );
// returns [ [ 1, 2 ], [ 'a', 'b' ], [ 3, 4 ] ];
`
To unzip specific tuple elements, you can provide an array of indices as an optional second argument.
`javascript
var arr = [ [ 1, 'a', 3 ], [ 2, 'b', 4 ] ];
var out = unzip( arr, [ 0, 2 ] );
// returns [ [ 1, 2 ], [ 3, 4 ] ];
`
`javascript
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' );
var filled2dBy = require( '@stdlib/array-base-filled2d-by' );
var unzip = require( '@stdlib/utils-unzip' );
function random( indices ) {
var j = indices[ 1 ] * 100;
return discreteUniform( j, j+100 );
}
var arr = filled2dBy( [ 100, 5 ], random );
console.dir( arr );
var out = unzip( arr );
console.dir( out );
`
*
- [@stdlib/utils-zip][@stdlib/utils/zip]: generate array tuples from input arrays.
*
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For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
See [LICENSE][stdlib-license].
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[stdlib]: https://github.com/stdlib-js/stdlib
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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/utils-unzip/tree/deno
[deno-readme]: https://github.com/stdlib-js/utils-unzip/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/utils-unzip/tree/umd
[umd-readme]: https://github.com/stdlib-js/utils-unzip/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/utils-unzip/tree/esm
[esm-readme]: https://github.com/stdlib-js/utils-unzip/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/utils-unzip/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/utils-unzip/main/LICENSE
[@stdlib/utils/zip]: https://www.npmjs.com/package/@stdlib/utils-zip