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‎CHANGELOG.md‎

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<section class="release" id="unreleased">
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## Unreleased (2026-04-02)
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## Unreleased (2026-04-06)
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<section class="features">
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### Features
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- [`aac0a2b`](https://github.com/stdlib-js/stdlib/commit/aac0a2be45cc8c0d70542b91d4ac3a958ea4881d) - add `ndarray2string` to namespace
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- [`47e4985`](https://github.com/stdlib-js/stdlib/commit/47e4985d18efb25b0fc00c6818fccdf547c9113e) - add `ndarray/to-string` [(#10899)](https://github.com/stdlib-js/stdlib/pull/10899)
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- [`8dbfe60`](https://github.com/stdlib-js/stdlib/commit/8dbfe608b990c4e12c729daa01489de8f6b56ac3) - add support for dtype instances
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- [`28d3e7d`](https://github.com/stdlib-js/stdlib/commit/28d3e7d6b05b312ebf14896cb0d8593902e443cb) - update `ndarray/base` TypeScript declarations [(#11166)](https://github.com/stdlib-js/stdlib/pull/11166)
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- [`364e294`](https://github.com/stdlib-js/stdlib/commit/364e294fbd4ebd149d86b8f7996da4b00b6c6b3b) - add `nulls` to namespace
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<details>
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- [`aac0a2b`](https://github.com/stdlib-js/stdlib/commit/aac0a2be45cc8c0d70542b91d4ac3a958ea4881d) - **feat:** add `ndarray2string` to namespace _(by Athan Reines)_
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- [`47e4985`](https://github.com/stdlib-js/stdlib/commit/47e4985d18efb25b0fc00c6818fccdf547c9113e) - **feat:** add `ndarray/to-string` [(#10899)](https://github.com/stdlib-js/stdlib/pull/10899) _(by Muhammad Haris, Athan Reines, stdlib-bot)_
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- [`a467bf0`](https://github.com/stdlib-js/stdlib/commit/a467bf0083da8f346611e53a684a78212f76d426) - **chore:** fix typos and incorrect test values [(#11270)](https://github.com/stdlib-js/stdlib/pull/11270) _(by Philipp Burckhardt)_
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- [`2db5404`](https://github.com/stdlib-js/stdlib/commit/2db5404d6a12f2d0c20fb61a5ce047daea72ea3f) - **refactor:** improve type specificity and use accessors for resolving ndarray meta data _(by Athan Reines)_
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- [`8dbfe60`](https://github.com/stdlib-js/stdlib/commit/8dbfe608b990c4e12c729daa01489de8f6b56ac3) - **feat:** add support for dtype instances _(by Athan Reines)_

‎lib/index.js‎

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*/
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setReadOnly( ns, 'toReversedDimension', require( './../to-reversed-dimension' ) );
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/**
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* @name ndarray2string
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* @memberof ns
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* @readonly
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* @type {Function}
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* @see {@link module:@stdlib/ndarray/to-string}
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*/
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setReadOnly( ns, 'ndarray2string', require( './../to-string' ) );
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/**
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* @name unshift
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* @memberof ns

‎to-string/README.md‎

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<!--
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@license Apache-2.0
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Copyright (c) 2026 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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# ndarray2string
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> Serialize an [ndarray][@stdlib/ndarray/ctor] as a string.
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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 ndarray2string = require( '@stdlib/ndarray/to-string' );
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```
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#### ndarray2string( x )
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Serializes an [ndarray][@stdlib/ndarray/ctor] as a string.
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```javascript
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var array = require( '@stdlib/ndarray/array' );
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var x = array( [ 1, 2, 3, 4 ], {
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'shape': [ 2, 2 ]
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});
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// returns <ndarray>
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var str = ndarray2string( x );
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// returns "ndarray( 'float64', new Float64Array( [ 1, 2, 3, 4 ] ), [ 2, 2 ], [ 2, 1 ], 0, 'row-major' )"
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```
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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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- The function does **not** serialize data outside of the buffer defined by the [ndarray][@stdlib/ndarray/ctor] view.
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- For ndarrays with more than `100` elements, the function abbreviates the data, showing only the first and last three values.
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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 array = require( '@stdlib/ndarray/array' );
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var ndarray2string = require( '@stdlib/ndarray/to-string' );
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// Create a 2x3 ndarray:
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var x = array( [ 1, 2, 3, 4, 5, 6 ], {
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'shape': [ 2, 3 ],
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'dtype': 'generic'
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});
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// Serialize the ndarray as a string:
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var str = ndarray2string( x );
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console.log( str );
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// => 'ndarray( \'generic\', [ 1, 2, 3, 4, 5, 6 ], [ 2, 3 ], [ 3, 1 ], 0, \'row-major\' )'
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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 -->

‎to-string/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) 2026 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 isString = require( '@stdlib/assert/is-string' ).isPrimitive;
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var shape2strides = require( './../../base/shape2strides' );
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var strides2offset = require( './../../base/strides2offset' );
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var numel = require( './../../base/numel' );
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var zeroTo = require( '@stdlib/array/base/zero-to' );
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var format = require( '@stdlib/string/format' );
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var ndarray = require( './../../ctor' );
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var pkg = require( './../package.json' ).name;
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var ndarray2string = require( './../lib' );
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// MAIN //
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bench( format( '%s:order=row-major', pkg ), function benchmark( b ) {
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var strides;
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var buffer;
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var offset;
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var order;
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var shape;
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var arr;
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var out;
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var i;
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shape = [ 10, 10, 10 ];
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order = 'row-major';
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buffer = zeroTo( numel( shape ) );
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strides = shape2strides( shape, order );
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offset = strides2offset( shape, strides );
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arr = ndarray( 'generic', buffer, shape, strides, offset, order );
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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out = ndarray2string( arr );
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if ( typeof out !== 'string' ) {
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b.fail( 'should return a string' );
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}
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}
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b.toc();
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if ( !isString( out ) ) {
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b.fail( 'should return a string' );
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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( format( '%s:order=column-major', pkg ), function benchmark( b ) {
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var strides;
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var buffer;
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var offset;
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var order;
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var shape;
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var arr;
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var out;
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var i;
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shape = [ 10, 10, 10 ];
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order = 'column-major';
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buffer = zeroTo( numel( shape ) );
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strides = shape2strides( shape, order );
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offset = strides2offset( shape, strides );
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arr = ndarray( 'generic', buffer, shape, strides, offset, order );
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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out = ndarray2string( arr );
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if ( typeof out !== 'string' ) {
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b.fail( 'should return a string' );
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}
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}
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b.toc();
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if ( !isString( out ) ) {
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b.fail( 'should return a string' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});

‎to-string/docs/repl.txt‎

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{{alias}}( x )
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Serializes an ndarray as a string.
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This function does *not* serialize data outside of the buffer region
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defined by the ndarray view.
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Parameters
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----------
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x: ndarray
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Input ndarray.
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Returns
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-------
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out: string
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String representation.
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Examples
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--------
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> var arr = {{alias:@stdlib/ndarray/array}}( [ [ 1, 2 ], [ 3, 4 ] ] );
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> var out = {{alias}}( arr )
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<string>
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See Also
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--------
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‎to-string/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) 2026 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 { ndarray } from '@stdlib/types/ndarray';
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/**
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* Serializes an ndarray as a string.
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*
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* ## Notes
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*
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* - The function does **not** serialize data outside of the buffer region defined by the ndarray view.
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*
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* @param x - input ndarray
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* @returns string representation
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*
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* @example
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* var array = require( `@stdlib/ndarray/array` );
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*
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* var x = array( [ [ 1.0, 2.0 ], [ 3.0, 4.0 ] ] );
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* // returns <ndarray>
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*
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* var str = ndarray2string( x );
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* // returns <string>
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*/
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declare function ndarray2string( x: ndarray ): string;
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// EXPORTS //
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export = ndarray2string;

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