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@stdlib/utils-zip

Generate array tuples from input arrays.

https://github.com/stdlib-js/utils-zip

Science Score: 44.0%

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Keywords

array generic javascript node node-js nodejs stdlib util utilities utility utils zip

Keywords from Contributors

iterator abbreviate assert symbol multiplication process reduced keys counts squared
Last synced: 6 months ago · JSON representation ·

Repository

Generate array tuples from input arrays.

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  • Stars: 2
  • Watchers: 3
  • Forks: 0
  • Open Issues: 0
  • Releases: 0
Topics
array generic javascript node node-js nodejs stdlib util utilities utility utils zip
Created over 4 years ago · Last pushed 11 months ago
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Readme Changelog Contributing License Code of conduct Citation Security

README.md

About stdlib...

We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.

The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.

When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.

To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!

Zip

NPM version Build Status Coverage Status <!-- dependencies -->

Generate array tuples from input arrays.

## Installation ```bash npm install @stdlib/utils-zip ``` Alternatively, - To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]). - If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions). - For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]). The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships. To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.
## Usage ```javascript var zip = require( '@stdlib/utils-zip' ); ``` #### zip( arr1, arr2,...\[, opts] ) Returns an `array` of `arrays`, where the ith element (tuple) in the returned `array` contains the ith elements of the input `arrays`. ```javascript var zipped = zip( [ 1, 2 ], [ 'a', 'b' ] ); // returns [ [ 1, 'a' ], [ 2, 'b' ] ] ``` By default, the returned `array` length is the length of the shortest input `array`. ```javascript var zipped = zip( [ 1, 2, 3 ], [ 'a', 'b' ] ); // returns [ [ 1, 'a' ], [ 2, 'b' ] ] ``` The function accepts an `options` object with optional properties: - **trunc**: `boolean` specifying whether the returned `array` should truncate `arrays` longer than the shortest `array`. Default: `true`. - **fill**: fill value used for unequal length `arrays`. Default: `null`. - **arrays**: `boolean` specifying whether, when provided a single input `array`, the function should interpret the argument as a list of `arrays` to be zipped (i.e., behavior similar to `zip.apply(null, arr)`). Default: `false`. To turn off truncation, ```javascript var opts = { 'trunc': false }; var zipped = zip( [ 1, 2, 3 ], [ 'a', 'b' ], opts ); // returns [ [ 1, 'a' ], [ 2, 'b' ], [ 3, null ] ] ``` A fill value is included in each tuple for each `array` which does not have an element at the ith index. By default, the fill value is `null`. To specify a different fill value, set the `fill` option. ```javascript var opts = { 'trunc': false, 'fill': '' }; var zipped = zip( [ 1, 2, 3 ], [ 'a', 'b' ], opts ); // returns [ [ 1, 'a' ], [ 2, 'b' ], [ 3, '' ] ] ``` If the function should interpret a single input `array` as an `array` of `arrays` to be zipped, ```javascript var arr = [ [ 1, 2 ], [ 'a', 'b' ] ]; // Default behavior: var zipped = zip( arr ); // returns [ [ [ 1, 2 ] ], [ [ 'a', 'b' ] ] ] // Array of arrays: zipped = zip( arr, { 'arrays': true } ); // returns [ [ 1, 'a' ], [ 2, 'b' ] ] ```
## Examples ```javascript var randu = require( '@stdlib/random-base-randu' ); var zip = require( '@stdlib/utils-zip' ); var x = []; var y1 = []; var y2 = []; var y3 = []; // Simulate some data... var i; for ( i = 0; i < 100; i++ ) { x.push( Date.now() ); y1.push( randu() * 100 ); y2.push( randu() * 100 ); y3.push( randu() ); } var zipped = zip( x, y1, y2, y3 ); console.log( zipped.join( '\n' ) ); ```
* * * ## See Also - [`@stdlib/utils-unzip`][@stdlib/utils/unzip]: unzip a zipped array (i.e., a nested array of tuples).
* * * ## Notice This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more. 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]. #### Community [![Chat][chat-image]][chat-url] --- ## License See [LICENSE][stdlib-license]. ## Copyright Copyright © 2016-2025. The Stdlib [Authors][stdlib-authors].

Owner

  • Name: stdlib
  • Login: stdlib-js
  • Kind: organization

Standard library for JavaScript.

Citation (CITATION.cff) 

cff-version: 1.2.0
title: stdlib
message: >-
  If you use this software, please cite it using the
  metadata from this file.

type: software

authors:
  - name: The Stdlib Authors
    url: https://github.com/stdlib-js/stdlib/graphs/contributors

repository-code: https://github.com/stdlib-js/stdlib
url: https://stdlib.io

abstract: |
  Standard library for JavaScript and Node.js.

keywords:
  - JavaScript
  - Node.js
  - TypeScript
  - standard library
  - scientific computing
  - numerical computing
  - statistical computing

license: Apache-2.0 AND BSL-1.0

date-released: 2016

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Packages

  • Total packages: 2
  • Total downloads:
    • npm 8 last-month
  • Total dependent packages: 2
    (may contain duplicates)
  • Total dependent repositories: 0
    (may contain duplicates)
  • Total versions: 21
  • Total maintainers: 4
npmjs.org: @stdlib/utils-zip

Generate array tuples from input arrays.

  • Homepage: https://stdlib.io
  • License: Apache-2.0
  • Latest release: 0.2.2
    published over 1 year ago
  • Versions: 13
  • Dependent Packages: 2
  • Dependent Repositories: 0
  • Downloads: 8 Last month
Rankings
Dependent packages count: 9.5%
Downloads: 13.1%
Average: 16.4%
Stargazers count: 16.8%
Forks count: 17.4%
Dependent repos count: 25.3%
Maintainers (4)
planeshifter rreusser stdlib-bot kgryte
Funding
  • type: opencollective
  • url: https://opencollective.com/stdlib
Last synced: 6 months ago
deno.land: stdlib_utils_zip

Generate array tuples from input arrays.

  • Versions: 8
  • Dependent Packages: 0
  • Dependent Repositories: 0
Rankings
Dependent repos count: 0.0%
Forks count: 20.0%
Average: 26.7%
Stargazers count: 28.2%
Dependent packages count: 58.5%
Last synced: 6 months ago

Dependencies

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  • @stdlib/constants-float64-eps ^0.0.x development
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  • tap-spec 5.x.x development
  • tape git+https://github.com/kgryte/tape.git#fix/globby development
  • @stdlib/assert-has-own-property ^0.0.x
  • @stdlib/assert-is-array ^0.0.x
  • @stdlib/assert-is-boolean ^0.0.x
  • @stdlib/assert-is-plain-object ^0.0.x
  • @stdlib/string-format ^0.0.x
  • @stdlib/types ^0.0.x
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