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Remove consecutive duplicated values.
npm install @stdlib/array-base-dedupe
Alternatively,
- To load the package in a website via a
script
tag without installation and bundlers, use the ES Module available on theesm
branch (see README). - If you are using Deno, visit the
deno
branch (see README for usage intructions). - For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the
umd
branch (see README).
The branches.md file summarizes the available branches and displays a diagram illustrating their relationships.
To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.
var dedupe = require( '@stdlib/array-base-dedupe' );
Removes consecutive duplicated values.
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.
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.
var x = [ 1, 1, 1, 2, 2, 3, 3, 3 ];
var y = dedupe( x, 2, false );
// returns [ 1, 1, 2, 2, 3, 3 ]
- The function mutates the input array.
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 );
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.
See LICENSE.
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