time-to-botec

Benchmark sampling in different programming languages
Log | Files | Refs | README

README.md (2431B)


      1 <!--
      2 
      3 @license Apache-2.0
      4 
      5 Copyright (c) 2018 The Stdlib Authors.
      6 
      7 Licensed under the Apache License, Version 2.0 (the "License");
      8 you may not use this file except in compliance with the License.
      9 You may obtain a copy of the License at
     10 
     11    http://www.apache.org/licenses/LICENSE-2.0
     12 
     13 Unless required by applicable law or agreed to in writing, software
     14 distributed under the License is distributed on an "AS IS" BASIS,
     15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     16 See the License for the specific language governing permissions and
     17 limitations under the License.
     18 
     19 -->
     20 
     21 # isIterableLike
     22 
     23 > Test if a value is [`iterable`][mdn-iterable-protocol]-like.
     24 
     25 <section class="usage">
     26 
     27 ## Usage
     28 
     29 ```javascript
     30 var isIterableLike = require( '@stdlib/assert/is-iterable-like' );
     31 ```
     32 
     33 #### isIterableLike( value )
     34 
     35 Tests if a `value` is [`iterable`][mdn-iterator-protocol]-like.
     36 
     37 ```javascript
     38 var bool = isIterableLike( [] );
     39 // returns <boolean>
     40 
     41 bool = isIterableLike( {} );
     42 // returns false
     43 ```
     44 
     45 </section>
     46 
     47 <!-- /.usage -->
     48 
     49 <section class="notes">
     50 
     51 ## Notes
     52 
     53 -   In order to be [iterable][mdn-iterable-protocol], an `object` must implement the `@@iterator` method, which, when called, returns an [iterator protocol-compliant object][mdn-iterator-protocol].
     54 -   An [iterator protocol-compliant object][mdn-iterator-protocol] is an `object` having a `next` method following the [iterator protocol][mdn-iterator-protocol].
     55 -   As full [iterator][mdn-iterator-protocol] compliance is **impossible** to achieve without evaluating an [iterator][mdn-iterator-protocol], this function checks **only** for interface compliance.
     56 -   In environments lacking `Symbol.iterator` support, this function always returns `false`.
     57 
     58 </section>
     59 
     60 <!-- /.notes -->
     61 
     62 <section class="examples">
     63 
     64 ## Examples
     65 
     66 <!-- eslint no-undef: "error" -->
     67 
     68 ```javascript
     69 var isIterableLike = require( '@stdlib/assert/is-iterable-like' );
     70 
     71 var bool = isIterableLike( [] );
     72 // returns <boolean>
     73 
     74 bool = isIterableLike( {} );
     75 // returns false
     76 
     77 bool = isIterableLike( null );
     78 // returns false
     79 ```
     80 
     81 </section>
     82 
     83 <!-- /.examples -->
     84 
     85 <section class="links">
     86 
     87 [mdn-iterable-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterable_protocol
     88 
     89 [mdn-iterator-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol
     90 
     91 </section>
     92 
     93 <!-- /.links -->