nodejs javascript stdlib node node-js types data structure array typed typed-array convert cast transform copy duplicate

Convert

Convert an array to an array of a different data type.

Installation

npm install @stdlib/array-convert

Alternatively,

To load the package in a website via a script tag without installation and bundlers, use the ES Module available on the esm branch.
If you are using Deno, visit the deno branch.
For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the umd branch.

The branches.md file summarizes the available branches and displays a diagram illustrating their relationships.

Usage

var convertArray = require( '@stdlib/array-convert' );

convertArray( arr, dtype )

Converts an array to an array of a different data type.

var arr = [ 1.0, 2.0, 3.0 ];
var out = convertArray( arr, 'float32' );
// returns <Float32Array>[ 1.0, 2.0, 3.0 ]

The function supports the following data types:

float32: single-precision floating-point numbers.
float64: double-precision floating-point numbers.
complex64: single-precision complex floating-point numbers.
complex128: double-precision complex floating-point numbers.
generic: values of any type.
int16: signed 16-bit integers.
int32: signed 32-bit integers.
int8: signed 8-bit integers.
uint16: unsigned 16-bit integers.
uint32: unsigned 32-bit integers.
uint8: unsigned 8-bit integers.
uint8c: unsigned clamped 8-bit integers.

Examples

var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
var filledarrayBy = require( '@stdlib/array-filled-by' );
var dtypes = require( '@stdlib/array-dtypes' );
var convertArray = require( '@stdlib/array-convert' );

// Create a generic array:
var arr = filledarrayBy( 5, 'generic', discreteUniform( -100, 100 ) );

// Get a list of array data types:
var DTYPES = dtypes();

// Convert the generic array to each array data type:
var out;
var i;
for ( i = 0; i < DTYPES.length; i++ ) {
    out = convertArray( arr, DTYPES[ i ] );
    console.log( out );
}

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.