README.md (3134B)
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 # reviveBasePRNG 22 23 > Revive a JSON-serialized pseudorandom number generator (PRNG). 24 25 <!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. --> 26 27 <section class="intro"> 28 29 </section> 30 31 <!-- /.intro --> 32 33 <!-- Package usage documentation. --> 34 35 <section class="usage"> 36 37 ## Usage 38 39 ```javascript 40 var reviveBasePRNG = require( '@stdlib/random/base/reviver' ); 41 ``` 42 43 #### reviveBasePRNG( key, value ) 44 45 Revives a JSON-serialized pseudorandom number generator (PRNG). 46 47 ```javascript 48 var parseJSON = require( '@stdlib/utils/parse-json' ); 49 var randu = require( '@stdlib/random/base/randu' ); 50 51 var str = JSON.stringify( randu ); 52 53 var rand = parseJSON( str, reviveBasePRNG ); 54 // returns <Function> 55 ``` 56 57 For details on the JSON serialization format, see the `.toJSON()` method for, e.g., [`randu()`][@stdlib/random/base/randu]. 58 59 </section> 60 61 <!-- /.usage --> 62 63 <!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> 64 65 <section class="notes"> 66 67 </section> 68 69 <!-- /.notes --> 70 71 <!-- Package usage examples. --> 72 73 <section class="examples"> 74 75 ## Examples 76 77 <!-- eslint no-undef: "error" --> 78 79 ```javascript 80 var randu = require( '@stdlib/random/base/randu' ); 81 var parseJSON = require( '@stdlib/utils/parse-json' ); 82 var reviveBasePRNG = require( '@stdlib/random/base/reviver' ); 83 84 var rand; 85 var str; 86 var r1; 87 var r2; 88 var i; 89 90 // Progress the PRNG state... 91 for ( i = 0; i < 100; i++ ) { 92 r1 = randu(); 93 } 94 95 // Serialize the PRNG as a JSON string: 96 str = JSON.stringify( randu ); 97 98 // Revive the JSON-serialized PRNG: 99 rand = parseJSON( str, reviveBasePRNG ); 100 if ( rand instanceof Error ) { 101 console.error( rand.message ); 102 } 103 104 // Generate duplicate sequences... 105 for ( i = 0; i < 100; i++ ) { 106 r1 = randu(); 107 r2 = rand(); 108 console.log( '%d == %d ? %s', r1, r2, ( r1 === r2 ).toString() ); 109 } 110 ``` 111 112 </section> 113 114 <!-- /.examples --> 115 116 <!-- 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. --> 117 118 <section class="references"> 119 120 </section> 121 122 <!-- /.references --> 123 124 <!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> 125 126 <section class="links"> 127 128 [@stdlib/random/base/randu]: https://www.npmjs.com/package/@stdlib/random/tree/main/base/randu 129 130 </section> 131 132 <!-- /.links -->