@stdlib/array-base-accessor-getter

Return an accessor function for retrieving an element from an array-like object supporting the get/set protocol.

https://github.com/stdlib-js/array-base-accessor-getter

Science Score: 44.0%

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Low similarity (15.8%) to scientific vocabulary

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access accessor array generic get getter javascript node node-js nodejs retrieve stdlib

Last synced: 6 months ago · JSON representation ·

Repository

Return an accessor function for retrieving an element from an array-like object supporting the get/set protocol.

Basic Info

Host: GitHub
Owner: stdlib-js
License: apache-2.0
Language: JavaScript
Default Branch: main
Homepage: https://github.com/stdlib-js/stdlib
Size: 246 KB

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Stars: 1
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access accessor array generic get getter javascript node node-js nodejs retrieve stdlib

Created about 3 years ago · Last pushed about 1 year ago

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Readme Changelog Contributing License Code of conduct Citation Security

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!

accessorGetter

Return an accessor function for retrieving an element from an array-like object supporting the get/set protocol.

## Installation ```bash npm install @stdlib/array-base-accessor-getter ``` 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 accessorGetter = require( '@stdlib/array-base-accessor-getter' ); ``` #### accessorGetter( dtype ) Returns an accessor function for retrieving an element from an array-like object supporting the get/set protocol. ```javascript var Complex64Array = require( '@stdlib/array-complex64' ); var realf = require( '@stdlib/complex-float32-real' ); var imagf = require( '@stdlib/complex-float32-imag' ); var arr = new Complex64Array( [ 1, 2, 3, 4 ] ); var get = accessorGetter( 'complex64' ); var v = get( arr, 1 ); // returns var re = realf( v ); // returns 3.0 var im = imagf( v ); // returns 4.0 ``` The returned accessor function accepts the following arguments: - **arr**: input array. - **idx**: element index.

## Notes - If provided an unsupported [`dtype`][@stdlib/array/dtypes], the function returns a default accessor function for accessing elements from any indexed array-like object supporting the get/set protocol; otherwise, the function returns an accessor function which should **only** be provided an array instance corresponding to `dtype` (e.g., if `dtype` is `'complex64'`, the returned accessor function should only be provided instances of `Complex64Array`). - Accessor functions do **not** verify that provided input arrays are array instances corresponding to `dtype`, as doing so would introduce performance overhead. If array instances corresponding to other data types are provided to an accessor function, JavaScript runtimes will consider the function polymorphic, potentially triggering de-optimization. In order to ensure maximum performance, **always** ensure that an accessor function is monomorphic. - Accessor functions do **not** perform bounds checking. - Accessor functions do **not** verify that provided input arrays actually implement the get/set protocol. - An array-like object supporting the get/set protocol is a data structure in which one accesses elements using explicit `get` and `set` methods (e.g., `Complex64Array` and `Complex128Array`).

## Examples ```javascript var Complex128Array = require( '@stdlib/array-complex128' ); var Complex64Array = require( '@stdlib/array-complex64' ); var zeroTo = require( '@stdlib/array-base-zero-to' ); var dtype = require( '@stdlib/array-dtype' ); var accessorGetter = require( '@stdlib/array-base-accessor-getter' ); var arr = new Complex128Array( zeroTo( 10 ) ); var v = accessorGetter( dtype( arr ) )( arr, 2 ); // returns console.log( v.toString() ); // => '4 + 5i' arr = new Complex64Array( zeroTo( 10 ) ); v = accessorGetter( dtype( arr ) )( arr, 4 ); // returns console.log( v.toString() ); // => '8 + 9i' ```

* * * ## 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

Website: https://stdlib.io
Twitter: stdlibjs
Repositories: 3,692
Profile: https://github.com/stdlib-js

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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- npm 47,446 last-month

Total dependent packages: 26
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Total versions: 5
Total maintainers: 4

npmjs.org: @stdlib/array-base-accessor-getter

Return an accessor function for retrieving an element from an array-like object supporting the get/set protocol.

Homepage: https://stdlib.io
License: Apache-2.0
Latest release: 0.2.2
published over 1 year ago

Versions: 5
Dependent Packages: 26
Dependent Repositories: 1
Downloads: 47,446 Last month

Rankings

Downloads: 1.0%

Dependent packages count: 1.0%

Average: 8.9%

Dependent repos count: 10.3%

Forks count: 15.4%

Stargazers count: 16.7%

Maintainers (4)

planeshifter rreusser stdlib-bot kgryte

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type: opencollective
url: https://opencollective.com/stdlib

Last synced: 7 months ago

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package.json npm

@stdlib/array-base-zero-to ^0.0.x development
@stdlib/array-complex128 ^0.0.x development
@stdlib/array-complex64 ^0.0.x development
@stdlib/array-dtype ^0.0.x development
@stdlib/array-filled-by ^0.0.x development
@stdlib/assert-is-function ^0.0.x development
@stdlib/bench ^0.0.x development
@stdlib/complex-imag ^0.0.x development
@stdlib/complex-imagf ^0.0.x development
@stdlib/complex-real ^0.0.x development
@stdlib/complex-realf ^0.0.x development
@stdlib/math-base-assert-is-nan ^0.0.x development
@stdlib/math-base-assert-is-nanf ^0.0.x development
@stdlib/random-base-discrete-uniform ^0.0.x development
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tape git+https://github.com/kgryte/tape.git#fix/globby development
@stdlib/types ^0.0.x

@stdlib/array-base-accessor-getter

Science Score: 44.0%

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accessorGetter

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