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| 1 | +<!-- |
| 2 | +
|
| 3 | +@license Apache-2.0 |
| 4 | +
|
| 5 | +Copyright (c) 2026 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 | +# fullBy |
| 22 | + |
| 23 | +> Create an [ndarray][@stdlib/ndarray/base/ctor] filled according to a callback function and having a specified shape and [data type][@stdlib/ndarray/dtypes]. |
| 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 fullBy = require( '@stdlib/ndarray/base/full-by' ); |
| 41 | +``` |
| 42 | + |
| 43 | +#### fullBy( dtype, shape, order, clbk\[, thisArg] ) |
| 44 | + |
| 45 | +Returns an [ndarray][@stdlib/ndarray/base/ctor] filled according to a callback function and having a specified shape and [data type][@stdlib/ndarray/dtypes]. |
| 46 | + |
| 47 | +```javascript |
| 48 | +var getDType = require( '@stdlib/ndarray/dtype' ); |
| 49 | + |
| 50 | +function clbk() { |
| 51 | + return 10.0; |
| 52 | +} |
| 53 | + |
| 54 | +var arr = fullBy( 'float64', [ 2, 2 ], 'row-major', clbk ); |
| 55 | +// returns <ndarray>[ [ 10.0, 10.0 ], [ 10.0, 10.0 ] ] |
| 56 | + |
| 57 | +var dt = String( getDType( arr ) ); |
| 58 | +// returns 'float64' |
| 59 | +``` |
| 60 | + |
| 61 | +This function accepts the following arguments: |
| 62 | + |
| 63 | +- **dtype**: underlying [data type][@stdlib/ndarray/dtypes]. |
| 64 | +- **shape**: array shape. |
| 65 | +- **order**: specifies whether an [ndarray][@stdlib/ndarray/base/ctor] is `'row-major'` (C-style) or `'column-major'` (Fortran-style). |
| 66 | +- **clbk**: callback function. |
| 67 | +- **thisArg**: callback function execution context (_optional_). |
| 68 | + |
| 69 | +The callback function is provided the following arguments: |
| 70 | + |
| 71 | +- **indices**: current array element indices. |
| 72 | + |
| 73 | +To set the callback function execution context, provide a `thisArg`. |
| 74 | + |
| 75 | +```javascript |
| 76 | +var getDType = require( '@stdlib/ndarray/dtype' ); |
| 77 | + |
| 78 | +function clbk( indices ) { |
| 79 | + return this.value * ( indices[ 0 ] + indices[ 1 ] ); // eslint-disable-line no-invalid-this |
| 80 | +} |
| 81 | + |
| 82 | +var ctx = { |
| 83 | + 'value': 10.0 |
| 84 | +}; |
| 85 | + |
| 86 | +var arr = fullBy( 'float64', [ 2, 2 ], 'row-major', clbk, ctx ); |
| 87 | +// returns <ndarray>[ [ 0.0, 10.0 ], [ 10.0, 20.0 ] ] |
| 88 | + |
| 89 | +var dt = String( getDType( arr ) ); |
| 90 | +// returns 'float64' |
| 91 | +``` |
| 92 | + |
| 93 | +</section> |
| 94 | + |
| 95 | +<!-- /.usage --> |
| 96 | + |
| 97 | +<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> |
| 98 | + |
| 99 | +<section class="notes"> |
| 100 | + |
| 101 | +</section> |
| 102 | + |
| 103 | +<!-- /.notes --> |
| 104 | + |
| 105 | +<!-- Package usage examples. --> |
| 106 | + |
| 107 | +<section class="examples"> |
| 108 | + |
| 109 | +## Examples |
| 110 | + |
| 111 | +<!-- eslint no-undef: "error" --> |
| 112 | + |
| 113 | +```javascript |
| 114 | +var discreteUniform = require( '@stdlib/random/base/discrete-uniform' ).factory; |
| 115 | +var ndarray2array = require( '@stdlib/ndarray/to-array' ); |
| 116 | +var dtypes = require( '@stdlib/ndarray/dtypes' ); |
| 117 | +var fullBy = require( '@stdlib/ndarray/base/full-by' ); |
| 118 | + |
| 119 | +// Get a list of data types: |
| 120 | +var dt = dtypes( 'integer_and_generic' ); |
| 121 | + |
| 122 | +// Generate filled arrays... |
| 123 | +var arr; |
| 124 | +var i; |
| 125 | +for ( i = 0; i < dt.length; i++ ) { |
| 126 | + arr = fullBy( dt[ i ], [ 2, 2 ], 'row-major', discreteUniform( -100, 100 ) ); |
| 127 | + console.log( ndarray2array( arr ) ); |
| 128 | +} |
| 129 | +``` |
| 130 | + |
| 131 | +</section> |
| 132 | + |
| 133 | +<!-- /.examples --> |
| 134 | + |
| 135 | +<!-- 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. --> |
| 136 | + |
| 137 | +<section class="references"> |
| 138 | + |
| 139 | +</section> |
| 140 | + |
| 141 | +<!-- /.references --> |
| 142 | + |
| 143 | +<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. --> |
| 144 | + |
| 145 | +<section class="related"> |
| 146 | + |
| 147 | +</section> |
| 148 | + |
| 149 | +<!-- /.related --> |
| 150 | + |
| 151 | +<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> |
| 152 | + |
| 153 | +<section class="links"> |
| 154 | + |
| 155 | +[@stdlib/ndarray/base/ctor]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/ndarray/base/ctor |
| 156 | + |
| 157 | +[@stdlib/ndarray/dtypes]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/ndarray/dtypes |
| 158 | + |
| 159 | +</section> |
| 160 | + |
| 161 | +<!-- /.links --> |
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