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filledBy

Create a filled "generic" array according to a provided callback function.

Installation

npm install @stdlib/array-base-filled-by

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 filledBy = require( '@stdlib/array-base-filled-by' );

filledBy( len, clbk[, thisArg] )

Returns a filled "generic" array according to a provided callback function.

function clbk( i ) {
    return i;
}

var out = filledBy( 3, clbk );
// returns [ 0, 1, 2 ]

When invoked, a callback function is provided a single argument:

• index: the current array index.

To set the callback execution context, provide a thisArg.

function clbk( i ) {
    this.count += 1;
    return i;
}

var ctx = {
    'count': 0
};

var out = filledBy( 3, clbk, ctx );
// returns [ 0, 1, 2 ];

var cnt = ctx.count;
// returns 3

Examples

var constantFunction = require( '@stdlib/utils-constant-function' );
var filledBy = require( '@stdlib/array-base-filled-by' );

var out = filledBy( 3, constantFunction( 0.0 ) );
// returns [ 0.0, 0.0, 0.0 ]

out = filledBy( 3, constantFunction( 'beep' ) );
// returns [ 'beep', 'beep', 'beep' ]

out = filledBy( 3, constantFunction( null ) );
// returns [ null, null, null ]

out = filledBy( 3, constantFunction( true ) );
// returns [ true, true, true ]

out = filledBy( 3, constantFunction( void 0 ) );
// returns [ undefined, undefined, undefined ]

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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.