stdlib-js/buffer-from-buffer

Copy buffer data to a new Buffer instance.

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copyBuffer

Copy buffer data to a new Buffer instance.

Installation

npm install @stdlib/buffer-from-buffer

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 (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.

Usage

var copyBuffer = require( '@stdlib/buffer-from-buffer' );

copyBuffer( buffer )

Copies buffer data to a new Buffer instance.

var array2buffer = require( '@stdlib/buffer-from-array' );

var b1 = array2buffer( [ 1, 2, 3, 4 ] );
// returns <Buffer>[ 1, 2, 3, 4 ]

var b2 = copyBuffer( b1 );
// returns <Buffer>[ 1, 2, 3, 4 ]

Examples

var allocUnsafe = require( '@stdlib/buffer-alloc-unsafe' );
var copyBuffer = require( '@stdlib/buffer-from-buffer' );

var bool;
var b1;
var b2;
var i;

// Allocate a new buffer:
b1 = allocUnsafe( 10 );

// Generate a new buffer from the existing buffer:
b2 = copyBuffer( b1 );

bool = ( b2 === b1 );
// returns false

bool = ( b2.length === b1.length );
// returns true

for ( i = 0; i < b2.length; i++ ) {
    console.log( b2[ i ] === b1[ i ] );
    // => true
}

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See Also

• @stdlib/buffer-alloc-unsafe: allocate a buffer having a specified number of bytes.
• @stdlib/buffer-ctor: Buffer.

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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.

Community

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License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.