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@stdlib/array

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<!-- @license Apache-2.0 Copyright (c) 2023 The Stdlib Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # dedupe > Remove consecutive duplicated values. <!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. --> <section class="intro"> </section> <!-- /.intro --> <!-- Package usage documentation. --> <section class="usage"> ## Usage ```javascript var dedupe = require( '@stdlib/array/base/dedupe' ); ``` #### dedupe( x, limit, equalNaNs ) Removes consecutive duplicated values. ```javascript var x = [ 1, 1, 2, 3, 3 ]; var y = dedupe( x, 1, false ); // returns [ 1, 2, 3 ] var bool = ( x === y ); // returns true ``` When `equalNaNs` is `false`, `NaN` values are considered distinct, and, when `equalNaNs` is `true`, `NaN` values are considered equal. ```javascript var x = [ NaN, NaN, 2, NaN, NaN ]; var y1 = dedupe( x, 1, false ); // returns [ NaN, NaN, 2, NaN, NaN ] var y2 = dedupe( x, 1, true ); // returns [ NaN, 2, NaN ] ``` To allow consecutive duplicate values up to a specified limit, provide a `limit` argument greater than one. ```javascript var x = [ 1, 1, 1, 2, 2, 3, 3, 3 ]; var y = dedupe( x, 2, false ); // returns [ 1, 1, 2, 2, 3, 3 ] ``` </section> <!-- /.usage --> <!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> <section class="notes"> ## Notes - The function mutates the input array. </section> <!-- /.notes --> <!-- Package usage examples. --> <section class="examples"> ## Examples <!-- eslint no-undef: "error" --> ```javascript var discreteUniform = require( '@stdlib/random/array/discrete-uniform' ); var dedupe = require( '@stdlib/array/base/dedupe' ); // Create an array of random numbers: var x = discreteUniform( 30, 0, 5, { 'dtype': 'generic' }); // returns [...] // Remove consecutive duplicates: var y = dedupe( x, 1, false ); // returns [...] console.log( y ); ``` </section> <!-- /.examples --> <!-- 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. --> <section class="references"> </section> <!-- /.references --> <!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. --> <section class="related"> </section> <!-- /.related --> <!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> <section class="links"> </section> <!-- /.links -->