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@stdlib/array-dataview
Advanced tools
Constructor which returns a data view representing a provided array buffer.
npm install @stdlib/array-dataview
var DataView = require( '@stdlib/array-dataview' );
Returns a DataView
representing a provided array buffer.
var ArrayBuffer = require( '@stdlib/array-buffer' );
var buf = new ArrayBuffer( 5 );
// returns <ArrayBuffer>
var dv = new DataView( buf );
// returns <DataView>
Read-only property which returns the underlying array buffer.
var ArrayBuffer = require( '@stdlib/array-buffer' );
var buf1 = new ArrayBuffer( 5 );
var dv = new DataView( buf1 );
var buf2 = dv.buffer;
// returns <ArrayBuffer>
var bool = ( buf1 === buf2 );
// returns true
Read-only property which returns the length (in bytes) of the DataView
.
var ArrayBuffer = require( '@stdlib/array-buffer' );
var buf = new ArrayBuffer( 5 );
var dv = new DataView( buf );
var byteLength = dv.byteLength;
// returns 5
Read-only property which returns the number of bytes from the DataView
to the start of the underlying array buffer.
var ArrayBuffer = require( '@stdlib/array-buffer' );
var buf = new ArrayBuffer( 5 );
var dv = new DataView( buf, 3 );
var byteOffset = dv.byteOffset;
// returns 3
TODO: document methods
var IS_LITTLE_ENDIAN = require( '@stdlib/assert-is-little-endian' );
var toBinaryString = require( '@stdlib/number-uint8-base-to-binary-string' );
var randu = require( '@stdlib/random-base-randu' );
var Uint8Array = require( '@stdlib/array-uint8' );
var ArrayBuffer = require( '@stdlib/array-buffer' );
var DataView = require( '@stdlib/array-dataview' );
// Create a new ArrayBuffer:
var buf = new ArrayBuffer( 64 );
// Create a new DataView:
var dv = new DataView( buf );
// Set values in the view:
var i;
for ( i = 0; i < dv.byteLength/8; i++ ) {
dv.setFloat64( i*8, randu()*100.0, IS_LITTLE_ENDIAN );
}
// Create a "bytes" view of the underlying array buffer:
var bytes = new Uint8Array( dv.buffer );
// Print the bytes:
for ( i = 0; i < bytes.length; i++ ) {
console.log( 'byte %d: %s', i, toBinaryString( bytes[ i ] ) );
}
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.
Copyright © 2016-2021. The Stdlib Authors.
0.0.5 (2021-08-22)
No changes reported for this release.
</section> <!-- /.release --> <section class="release" id="v0.0.4">FAQs
DataView.
The npm package @stdlib/array-dataview receives a total of 1,583 weekly downloads. As such, @stdlib/array-dataview popularity was classified as popular.
We found that @stdlib/array-dataview demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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