README.md (2788B)
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 # papply 22 23 > Partially apply function arguments. 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 papply = require( '@stdlib/utils/papply' ); 41 ``` 42 43 #### papply( fcn\[, ...args] ) 44 45 Partially applies function arguments. 46 47 ```javascript 48 function add( x, y ) { 49 return x + y; 50 } 51 52 var add2 = papply( add, 2 ); 53 54 var sum = add2( 3 ); 55 // returns 5 56 57 sum = add2( 7 ); 58 // returns 9 59 ``` 60 61 </section> 62 63 <!-- /.usage --> 64 65 <!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> 66 67 <section class="notes"> 68 69 ## Notes 70 71 - The implementation does **not** set the `length` of the returned function. Accordingly, the returned function `length` is **always** `0`. 72 - The evaluation context is **always** `null`. 73 74 </section> 75 76 <!-- /.notes --> 77 78 <!-- Package usage examples. --> 79 80 <section class="examples"> 81 82 ## Examples 83 84 <!-- eslint no-undef: "error" --> 85 86 ```javascript 87 var randu = require( '@stdlib/random/base/randu' ); 88 var floor = require( '@stdlib/math/base/special/floor' ); 89 var papply = require( '@stdlib/utils/papply' ); 90 91 var fcn; 92 var w; 93 var t; 94 var s; 95 var v; 96 var i; 97 98 function add( x, y, z, w, t, s ) { 99 return x + y + z + w + t + s; 100 } 101 102 fcn = papply( add, 5, 4, 3 ); 103 104 for ( i = 0; i < 100; i++ ) { 105 w = floor( randu() * 5 ); 106 t = floor( randu() * 10 ); 107 s = floor( randu() * 15 ); 108 v = fcn( w, t, s ); 109 console.log( '5+4+3+%d+%d+%d = %d', w, t, s, v ); 110 } 111 ``` 112 113 </section> 114 115 <!-- /.examples --> 116 117 <!-- 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. --> 118 119 <section class="references"> 120 121 </section> 122 123 <!-- /.references --> 124 125 <!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> 126 127 <section class="links"> 128 129 </section> 130 131 <!-- /.links -->