README.md (3413B)
1 <!-- 2 3 @license Apache-2.0 4 5 Copyright (c) 2019 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 # itercurange 22 23 > Create an [iterator][mdn-iterator-protocol] which iteratively computes a cumulative range. 24 25 <section class="intro"> 26 27 The [**range**][range] is defined as the difference between the maximum and minimum values. 28 29 </section> 30 31 <!-- /.intro --> 32 33 <!-- Package usage documentation. --> 34 35 <section class="usage"> 36 37 ## Usage 38 39 ```javascript 40 var itercurange = require( '@stdlib/stats/iter/curange' ); 41 ``` 42 43 #### itercurange( iterator ) 44 45 Returns an [iterator][mdn-iterator-protocol] which iteratively computes a cumulative range. 46 47 ```javascript 48 var array2iterator = require( '@stdlib/array/to-iterator' ); 49 50 var arr = array2iterator( [ 2.0, 1.0, 3.0, -7.0, -5.0 ] ); 51 var it = itercurange( arr ); 52 53 var r = it.next().value; 54 // returns 0.0 55 56 r = it.next().value; 57 // returns 1.0 58 59 r = it.next().value; 60 // returns 2.0 61 62 r = it.next().value; 63 // returns 10.0 64 65 r = it.next().value; 66 // returns 10.0 67 ``` 68 69 </section> 70 71 <!-- /.usage --> 72 73 <!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> 74 75 <section class="notes"> 76 77 ## Notes 78 79 - If an iterated value is non-numeric (including `NaN`), the function returns `NaN` for **all** future iterations. If non-numeric iterated values are possible, you are advised to provide an [`iterator`][mdn-iterator-protocol] which type checks and handles non-numeric values accordingly. 80 81 </section> 82 83 <!-- /.notes --> 84 85 <!-- Package usage examples. --> 86 87 <section class="examples"> 88 89 ## Examples 90 91 <!-- eslint no-undef: "error" --> 92 93 ```javascript 94 var runif = require( '@stdlib/random/iter/uniform' ); 95 var itercurange = require( '@stdlib/stats/iter/curange' ); 96 97 // Create an iterator for generating uniformly distributed pseudorandom numbers: 98 var rand = runif( -10.0, 10.0, { 99 'seed': 1234, 100 'iter': 100 101 }); 102 103 // Create an iterator for iteratively computing a cumulative range: 104 var it = itercurange( rand ); 105 106 // Perform manual iteration... 107 var v; 108 while ( true ) { 109 v = it.next(); 110 if ( typeof v.value === 'number' ) { 111 console.log( 'range: %d', v.value ); 112 } 113 if ( v.done ) { 114 break; 115 } 116 } 117 ``` 118 119 </section> 120 121 <!-- /.examples --> 122 123 <!-- 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. --> 124 125 <section class="references"> 126 127 </section> 128 129 <!-- /.references --> 130 131 <!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> 132 133 <section class="links"> 134 135 [range]: https://en.wikipedia.org/wiki/Range_%28statistics%29 136 137 [mdn-iterator-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol 138 139 </section> 140 141 <!-- /.links -->