# @stdlib/array-base-to-deduped

0.2.1 • Public • Published

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# toDeduped

Copy elements to a new "generic" array after removing consecutive duplicated values.

## Installation

`npm install @stdlib/array-base-to-deduped`

## Usage

`var toDeduped = require( '@stdlib/array-base-to-deduped' );`

#### toDeduped( x, limit, equalNaNs )

Copies elements to a new "generic" array after removing consecutive duplicated values.

```var x = [ 1, 1, 2, 3, 3 ];

var y = toDeduped( x, 1, false );
// returns [ 1, 2, 3 ]

var bool = ( x === y );
// returns false```

When `equalNaNs` is `false`, `NaN` values are considered distinct, and, when `equalNaNs` is `true`, `NaN` values are considered equal.

```var x = [ NaN, NaN, 2, NaN, NaN ];

var y1 = toDeduped( x, 1, false );
// returns [ NaN, NaN, 2, NaN, NaN ]

var y2 = toDeduped( x, 1, true );
// returns [ NaN, 2, NaN ]```

To allow consecutive duplicate values up to a specified limit, provide a `limit` argument greater than one.

```var x = [ 1, 1, 1, 2, 2, 3, 3, 3 ];

var y = toDeduped( x, 2, false );
// returns [ 1, 1, 2, 2, 3, 3 ]```

## Notes

• The function always returns a new "generic" array.

## Examples

```var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var toDeduped = require( '@stdlib/array-base-to-deduped' );

// Create an array of random numbers:
var x = discreteUniform( 30, 0, 5, {
'dtype': 'generic'
});
// returns [...]

// Remove consecutive duplicates:
var y = toDeduped( x, 1, false );
// returns [...]

console.log( x );
console.log( y );```

## Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

## Package Sidebar

### Install

`npm i @stdlib/array-base-to-deduped`

### Repository

github.com/stdlib-js/array-base-to-deduped

stdlib.io

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