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‎CHANGELOG.md‎

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<section class="release" id="unreleased">
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## Unreleased (2025-08-29)
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## Unreleased (2025-08-30)
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<section class="features">
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### Features
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- [`8e8e3a4`](https://github.com/stdlib-js/stdlib/commit/8e8e3a410a266afa887a1c9f9df7f98833bfa4ea) - add `ndarray/with` [(#7971)](https://github.com/stdlib-js/stdlib/pull/7971)
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- [`f043c89`](https://github.com/stdlib-js/stdlib/commit/f043c893ac0fe9392f7b764167899a482d84708e) - add `ndarray/base/nullary-strided1d` [(#7772)](https://github.com/stdlib-js/stdlib/pull/7772)
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- [`3174a3b`](https://github.com/stdlib-js/stdlib/commit/3174a3b0243e1976487cd1dea54decec9caaa3f8) - add `ndarray/base/any` [(#7640)](https://github.com/stdlib-js/stdlib/pull/7640)
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- [`c42febe`](https://github.com/stdlib-js/stdlib/commit/c42febe4bb7062771a68d869eff02b40e3644f6d) - add `ndarray/base/binary-reduce-strided1d` [(#7813)](https://github.com/stdlib-js/stdlib/pull/7813)
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<details>
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- [`8e8e3a4`](https://github.com/stdlib-js/stdlib/commit/8e8e3a410a266afa887a1c9f9df7f98833bfa4ea) - **feat:** add `ndarray/with` [(#7971)](https://github.com/stdlib-js/stdlib/pull/7971) _(by Muhammad Haris, Athan Reines)_
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- [`3091a38`](https://github.com/stdlib-js/stdlib/commit/3091a3891a9bc2755cde60001cc45a1168fca6d9) - **refactor:** use utility _(by Athan Reines)_
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- [`f043c89`](https://github.com/stdlib-js/stdlib/commit/f043c893ac0fe9392f7b764167899a482d84708e) - **feat:** add `ndarray/base/nullary-strided1d` [(#7772)](https://github.com/stdlib-js/stdlib/pull/7772) _(by Muhammad Haris, Athan Reines)_
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- [`3174a3b`](https://github.com/stdlib-js/stdlib/commit/3174a3b0243e1976487cd1dea54decec9caaa3f8) - **feat:** add `ndarray/base/any` [(#7640)](https://github.com/stdlib-js/stdlib/pull/7640) _(by Muhammad Haris, Athan Reines)_

‎with/README.md‎

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<!--
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@license Apache-2.0
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Copyright (c) 2025 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# ndarrayWith
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> Return a new [ndarray][@stdlib/ndarray/ctor] with the element at a specified index replaced by a provided value.
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<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
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<section class="intro">
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</section>
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<!-- /.intro -->
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<!-- Package usage documentation. -->
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<section class="usage">
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## Usage
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```javascript
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var ndarrayWith = require( '@stdlib/ndarray/with' );
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```
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#### ndarrayWith( x, indices, value )
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Returns a new [ndarray][@stdlib/ndarray/ctor] with the element at a specified index replaced by a provided value.
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```javascript
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var zeros = require( '@stdlib/ndarray/zeros' );
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var x = zeros( [ 2, 2 ], {
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'dtype': 'float64'
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});
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// returns <ndarray>
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var out = ndarrayWith( x, [ 0, 0 ], 1.0 );
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// returns <ndarray>
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var v = out.get( 0, 0 );
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// returns 1.0
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```
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The function accepts the following arguments:
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- **x**: input [ndarray][@stdlib/ndarray/ctor].
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- **indices**: indices of the element to replace.
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- **value**: replacement value.
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</section>
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<!-- /.usage -->
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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="notes">
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## Notes
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- This function does not validate that a provided `value` is compatible with the data type of the input [ndarray][@stdlib/ndarray/ctor]. For example, the function does not guard against precision loss when `value` is a real-valued number and the input [ndarray][@stdlib/ndarray/ctor] has an integer data type. This function should be considered a copy-on-write analog to using an [ndarray][@stdlib/ndarray/ctor]'s `set` method. Whether a `value` is silently coerced to the data type of the input [ndarray][@stdlib/ndarray/ctor] or triggers an exception when incompatible is implementation-dependent. Accordingly, any assertion logic ensuring data type compatibility should be performed **before** calling this function.
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</section>
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<!-- /.notes -->
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<!-- Package usage examples. -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var zeros = require( '@stdlib/ndarray/zeros' );
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var ndarray2array = require( '@stdlib/ndarray/to-array' );
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var ndarrayWith = require( '@stdlib/ndarray/with' );
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var x = zeros( [ 1, 3, 3 ], {
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'dtype': 'float64'
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});
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var out = ndarrayWith( x, [ 0, 1, 1 ], 10.0 );
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console.log( ndarray2array( out ) );
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```
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</section>
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<!-- /.examples -->
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<!-- 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. -->
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<section class="references">
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</section>
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<!-- /.references -->
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<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
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<section class="related">
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</section>
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<!-- /.related -->
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="links">
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[@stdlib/ndarray/ctor]: https://github.com/stdlib-js/ndarray/tree/main/ctor
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<!-- <related-links> -->
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<!-- </related-links> -->
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</section>
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<!-- /.links -->

‎with/benchmark/benchmark.js‎

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var bench = require( '@stdlib/bench' );
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var isndarrayLike = require( '@stdlib/assert/is-ndarray-like' );
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var zeros = require( './../../zeros' );
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var pkg = require( './../package.json' ).name;
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var ndarrayWith = require( './../lib' );
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// MAIN //
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bench( pkg+':ndims=1', function benchmark( b ) {
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var v;
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var x;
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var i;
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x = zeros( [ 5 ], {
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'dtype': 'float64'
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});
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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v = ndarrayWith( x, [ 4 ], 5 );
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if ( typeof v !== 'object' ) {
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b.fail( 'should return an ndarray' );
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}
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}
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b.toc();
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if ( !isndarrayLike( v ) ) {
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b.fail( 'should return an ndarray' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});
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bench( pkg+':ndims=2', function benchmark( b ) {
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var v;
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var x;
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var i;
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x = zeros( [ 2, 2 ], {
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'dtype': 'float64'
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});
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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v = ndarrayWith( x, [ 1, 1 ], 5 );
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if ( typeof v !== 'object' ) {
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b.fail( 'should return an ndarray' );
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}
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}
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b.toc();
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if ( !isndarrayLike( v ) ) {
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b.fail( 'should return an ndarray' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});
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bench( pkg+':ndims=3', function benchmark( b ) {
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var v;
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var x;
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var i;
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x = zeros( [ 2, 2, 2 ], {
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'dtype': 'float64'
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});
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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v = ndarrayWith( x, [ 1, 1, 1 ], 5 );
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if ( typeof v !== 'object' ) {
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b.fail( 'should return an ndarray' );
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}
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}
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b.toc();
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if ( !isndarrayLike( v ) ) {
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b.fail( 'should return an ndarray' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});
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bench( pkg+':ndims=4', function benchmark( b ) {
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var v;
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var x;
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var i;
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x = zeros( [ 2, 2, 2, 2 ], {
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'dtype': 'float64'
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});
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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v = ndarrayWith( x, [ 1, 1, 1, 1 ], 5 );
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if ( typeof v !== 'object' ) {
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b.fail( 'should return an ndarray' );
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}
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}
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b.toc();
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if ( !isndarrayLike( v ) ) {
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b.fail( 'should return an ndarray' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});
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bench( pkg+':ndims=5', function benchmark( b ) {
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var v;
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var x;
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var i;
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x = zeros( [ 2, 2, 2, 2, 2 ], {
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'dtype': 'float64'
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});
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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v = ndarrayWith( x, [ 1, 1, 1, 1, 1 ], 5 );
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if ( typeof v !== 'object' ) {
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b.fail( 'should return an ndarray' );
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}
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}
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b.toc();
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if ( !isndarrayLike( v ) ) {
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b.fail( 'should return an ndarray' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});

‎with/docs/repl.txt‎

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{{alias}}( x, indices, value )
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Returns a new ndarray with the element at a specified index replaced by a
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provided value.
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Parameters
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----------
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x: ndarray
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Input array.
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indices: Array<integer>
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Indices of the value to replace.
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value: any
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Replaced value.
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Returns
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-------
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out: ndarray
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Output ndarray.
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Examples
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--------
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> var x = {{alias:@stdlib/ndarray/array}}( [ [ 1, 2 ], [ 3, 4 ] ] );
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> var out = {{alias}}( x, [ 0, 0 ], 5 );
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> var v = out.get( 0, 0 )
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5
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See Also
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--------

‎with/docs/types/index.d.ts‎

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/*
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// TypeScript Version: 4.1
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/// <reference types="@stdlib/types"/>
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import { typedndarray } from '@stdlib/types/ndarray';
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/**
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* Returns a new ndarray with the element at a specified index replaced by a provided value.
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*
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* @param x - input ndarray
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* @param indices - indices of the element to replace
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* @param value - value to set
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* @returns output ndarray
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*
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* @example
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* var ndarray = require( '@stdlib/ndarray/ctor' );
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*
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* var buffer = [ 1, 2, 3, 4 ];
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* var shape = [ 2, 2 ];
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* var order = 'row-major';
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* var strides = [ 2, 1 ];
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* var offset = 0;
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*
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* var x = ndarray( 'generic', buffer, shape, strides, offset, order );
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*
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* var out = ndarrayWith( x, [ 0, 0 ], 5 );
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* // returns <ndarray>
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*
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* var v = out.get( 0, 0 );
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* // returns 5
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*/
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declare function ndarrayWith<T = unknown, U extends typedndarray<T> = typedndarray<T>>( x: typedndarray<T>, indices: Array<number>, value: T ): U;
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// EXPORTS //
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export = ndarrayWith;

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