{"id":23453659,"url":"https://github.com/stdlib-js/array-base-accessor-getter","last_synced_at":"2026-02-27T18:03:26.595Z","repository":{"id":65696090,"uuid":"574774776","full_name":"stdlib-js/array-base-accessor-getter","owner":"stdlib-js","description":"Return an accessor function for retrieving an element from an array-like object supporting the get/set protocol.","archived":false,"fork":false,"pushed_at":"2025-01-06T01:37:42.000Z","size":252,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":3,"default_branch":"main","last_synced_at":"2025-04-12T04:39:24.176Z","etag":null,"topics":["access","accessor","array","generic","get","getter","javascript","node","node-js","nodejs","retrieve","stdlib"],"latest_commit_sha":null,"homepage":"https://github.com/stdlib-js/stdlib","language":"JavaScript","has_issues":false,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/stdlib-js.png","metadata":{"files":{"readme":"README.md","changelog":"CHANGELOG.md","contributing":"CONTRIBUTING.md","funding":null,"license":"LICENSE","code_of_conduct":"CODE_OF_CONDUCT.md","threat_model":null,"audit":null,"citation":"CITATION.cff","codeowners":null,"security":"SECURITY.md","support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null},"funding":{"github":["stdlib-js"],"open_collective":"stdlib","tidelift":"npm/@stdlib/stdlib"}},"created_at":"2022-12-06T03:26:19.000Z","updated_at":"2025-01-06T01:34:38.000Z","dependencies_parsed_at":"2024-03-01T06:38:25.238Z","dependency_job_id":"839774ab-dc4e-43d0-ae8a-d7887fadd67e","html_url":"https://github.com/stdlib-js/array-base-accessor-getter","commit_stats":{"total_commits":35,"total_committers":1,"mean_commits":35.0,"dds":0.0,"last_synced_commit":"c97c2982fb820f5294aa57aa27322adb3516e5cc"},"previous_names":[],"tags_count":17,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Farray-base-accessor-getter","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Farray-base-accessor-getter/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Farray-base-accessor-getter/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Farray-base-accessor-getter/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/stdlib-js","download_url":"https://codeload.github.com/stdlib-js/array-base-accessor-getter/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":248760315,"owners_count":21157334,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["access","accessor","array","generic","get","getter","javascript","node","node-js","nodejs","retrieve","stdlib"],"created_at":"2024-12-24T02:19:20.795Z","updated_at":"2026-02-27T18:03:26.589Z","avatar_url":"https://github.com/stdlib-js.png","language":"JavaScript","funding_links":["https://github.com/sponsors/stdlib-js","https://opencollective.com/stdlib","https://tidelift.com/funding/github/npm/@stdlib/stdlib"],"categories":[],"sub_categories":[],"readme":"\u003c!--\n\n@license Apache-2.0\n\nCopyright (c) 2022 The Stdlib Authors.\n\nLicensed under the Apache License, Version 2.0 (the \"License\");\nyou may not use this file except in compliance with the License.\nYou may obtain a copy of the License at\n\n   http://www.apache.org/licenses/LICENSE-2.0\n\nUnless required by applicable law or agreed to in writing, software\ndistributed under the License is distributed on an \"AS IS\" BASIS,\nWITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\nSee the License for the specific language governing permissions and\nlimitations under the License.\n\n--\u003e\n\n\n\u003cdetails\u003e\n  \u003csummary\u003e\n    About stdlib...\n  \u003c/summary\u003e\n  \u003cp\u003eWe 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.\u003c/p\u003e\n  \u003cp\u003eThe 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.\u003c/p\u003e\n  \u003cp\u003eWhen 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.\u003c/p\u003e\n  \u003cp\u003eTo join us in bringing numerical computing to the web, get started by checking us out on \u003ca href=\"https://github.com/stdlib-js/stdlib\"\u003eGitHub\u003c/a\u003e, and please consider \u003ca href=\"https://opencollective.com/stdlib\"\u003efinancially supporting stdlib\u003c/a\u003e. We greatly appreciate your continued support!\u003c/p\u003e\n\u003c/details\u003e\n\n# accessorGetter\n\n[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] \u003c!-- [![dependencies][dependencies-image]][dependencies-url] --\u003e\n\n\u003e Return an accessor function for retrieving an element from an array-like object supporting the get/set protocol.\n\n\u003c!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. --\u003e\n\n\u003csection class=\"intro\"\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.intro --\u003e\n\n\u003c!-- Package usage documentation. --\u003e\n\n\u003csection class=\"installation\"\u003e\n\n## Installation\n\n```bash\nnpm install @stdlib/array-base-accessor-getter\n```\n\nAlternatively,\n\n-   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]).\n-   If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).\n-   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]).\n\nThe [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.\n\nTo 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.\n\n\u003c/section\u003e\n\n\u003csection class=\"usage\"\u003e\n\n## Usage\n\n```javascript\nvar accessorGetter = require( '@stdlib/array-base-accessor-getter' );\n```\n\n#### accessorGetter( dtype )\n\nReturns an accessor function for retrieving an element from an array-like object supporting the get/set protocol.\n\n```javascript\nvar Complex64Array = require( '@stdlib/array-complex64' );\n\nvar arr = new Complex64Array( [ 1, 2, 3, 4 ] );\n\nvar get = accessorGetter( 'complex64' );\nvar v = get( arr, 1 );\n// returns \u003cComplex64\u003e[ 3.0, 4.0 ]\n```\n\nThe returned accessor function accepts the following arguments:\n\n-   **arr**: input array.\n-   **idx**: element index.\n\n\u003c/section\u003e\n\n\u003c!-- /.usage --\u003e\n\n\u003c!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\u003csection class=\"notes\"\u003e\n\n## Notes\n\n-   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`).\n-   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.\n-   Accessor functions do **not** perform bounds checking.\n-   Accessor functions do **not** verify that provided input arrays actually implement the get/set protocol.\n-   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`).\n\n\u003c/section\u003e\n\n\u003c!-- /.notes --\u003e\n\n\u003c!-- Package usage examples. --\u003e\n\n\u003csection class=\"examples\"\u003e\n\n## Examples\n\n\u003c!-- eslint no-undef: \"error\" --\u003e\n\n```javascript\nvar Complex128Array = require( '@stdlib/array-complex128' );\nvar Complex64Array = require( '@stdlib/array-complex64' );\nvar zeroTo = require( '@stdlib/array-base-zero-to' );\nvar dtype = require( '@stdlib/array-dtype' );\nvar accessorGetter = require( '@stdlib/array-base-accessor-getter' );\n\nvar arr = new Complex128Array( zeroTo( 10 ) );\nvar v = accessorGetter( dtype( arr ) )( arr, 2 );\n// returns \u003cComplex128\u003e[ 4.0, 5.0 ]\n\nconsole.log( v.toString() );\n// =\u003e '4 + 5i'\n\narr = new Complex64Array( zeroTo( 10 ) );\nv = accessorGetter( dtype( arr ) )( arr, 4 );\n// returns \u003cComplex64\u003e[ 8.0, 9.0 ]\n\nconsole.log( v.toString() );\n// =\u003e '8 + 9i'\n```\n\n\u003c/section\u003e\n\n\u003c!-- /.examples --\u003e\n\n\u003c!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\u003csection class=\"references\"\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.references --\u003e\n\n\u003c!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. --\u003e\n\n\u003csection class=\"related\"\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.related --\u003e\n\n\u003c!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\n\u003csection class=\"main-repo\" \u003e\n\n* * *\n\n## Notice\n\nThis 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.\n\nFor 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].\n\n#### Community\n\n[![Chat][chat-image]][chat-url]\n\n---\n\n## License\n\nSee [LICENSE][stdlib-license].\n\n\n## Copyright\n\nCopyright \u0026copy; 2016-2026. The Stdlib [Authors][stdlib-authors].\n\n\u003c/section\u003e\n\n\u003c!-- /.stdlib --\u003e\n\n\u003c!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\u003csection class=\"links\"\u003e\n\n[npm-image]: http://img.shields.io/npm/v/@stdlib/array-base-accessor-getter.svg\n[npm-url]: https://npmjs.org/package/@stdlib/array-base-accessor-getter\n\n[test-image]: https://github.com/stdlib-js/array-base-accessor-getter/actions/workflows/test.yml/badge.svg?branch=main\n[test-url]: https://github.com/stdlib-js/array-base-accessor-getter/actions/workflows/test.yml?query=branch:main\n\n[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/array-base-accessor-getter/main.svg\n[coverage-url]: https://codecov.io/github/stdlib-js/array-base-accessor-getter?branch=main\n\n\u003c!--\n\n[dependencies-image]: https://img.shields.io/david/stdlib-js/array-base-accessor-getter.svg\n[dependencies-url]: https://david-dm.org/stdlib-js/array-base-accessor-getter/main\n\n--\u003e\n\n[chat-image]: https://img.shields.io/badge/zulip-join_chat-brightgreen.svg\n[chat-url]: https://stdlib.zulipchat.com\n\n[stdlib]: https://github.com/stdlib-js/stdlib\n\n[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors\n\n[umd]: https://github.com/umdjs/umd\n[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules\n\n[deno-url]: https://github.com/stdlib-js/array-base-accessor-getter/tree/deno\n[deno-readme]: https://github.com/stdlib-js/array-base-accessor-getter/blob/deno/README.md\n[umd-url]: https://github.com/stdlib-js/array-base-accessor-getter/tree/umd\n[umd-readme]: https://github.com/stdlib-js/array-base-accessor-getter/blob/umd/README.md\n[esm-url]: https://github.com/stdlib-js/array-base-accessor-getter/tree/esm\n[esm-readme]: https://github.com/stdlib-js/array-base-accessor-getter/blob/esm/README.md\n[branches-url]: https://github.com/stdlib-js/array-base-accessor-getter/blob/main/branches.md\n\n[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/array-base-accessor-getter/main/LICENSE\n\n[@stdlib/array/dtypes]: https://github.com/stdlib-js/array-dtypes\n\n\u003c/section\u003e\n\n\u003c!-- /.links --\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstdlib-js%2Farray-base-accessor-getter","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fstdlib-js%2Farray-base-accessor-getter","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstdlib-js%2Farray-base-accessor-getter/lists"}