@stdlib/utils-map-function

Invoke a function n times and return an array of accumulated function return values.

Usage no npm install needed!

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README

mapFun

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Invoke a function n times and return an array of accumulated function return values.

Installation

npm install @stdlib/utils-map-function

Usage

var mapFun = require( '@stdlib/utils-map-function' );

mapFun( fcn, n[, thisArg ] )

Invokes a function n times and returns an array of accumulated function return values.

function fcn( i ) {
    return i;
}

var arr = mapFun( fcn, 5 );
// returns [ 0, 1, 2, 3, 4 ]

To set the function execution context, provide a thisArg.

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

var context = {
    'count': 0
};

var arr = mapFun( fcn, 5, context );
// returns [ 0, 1, 2, 3, 4 ]

console.log( context.count );
// => 5

Notes

  • The invoked function is provided a single argument: the invocation index (zero-based).

Examples

var randu = require( '@stdlib/random-base-randu' );
var mapFun = require( '@stdlib/utils-map-function' );

function rand( i ) {
    return randu() * i * 10.0;
}

var arr = mapFun( rand, 100 );
console.log( arr );

See Also

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.

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License

See LICENSE.

Copyright

Copyright © 2016-2022. The Stdlib Authors.