@stdlib/utils-reverse-arguments NPM

reverseArguments

Create a function that invokes a provided function with arguments in reverse order.

Installation

npm install @stdlib/utils-reverse-arguments

Usage

var reverseArguments = require( '@stdlib/utils-reverse-arguments' );

reverseArguments( fcn[, thisArg] )

Returns a function that invokes a provided function with arguments in reverse order.

function foo( a, b ) {
    return [ a, b ];
}

var bar = reverseArguments( foo );

var out = bar( 1, 2 );
// returns [ 2, 1 ]

To set the this context when invoking the provided function, provide a thisArg.

function Foo() {
    this.x = 1;
    this.y = 2;
}

Foo.prototype.scale = function scale( a, b ) {
    return [ this.x*a, this.y*b ];
};

var ctx = {
    'x': 10,
    'y': 20
};

var foo = new Foo();

var bar = reverseArguments( foo.scale, ctx );

var out = bar( 1, 2 );
// returns [ 20, 20 ]

Examples

var reverseArguments = require( '@stdlib/utils-reverse-arguments' );

function foo( a, b, c ) {
    return [ a, b, c ];
}

var bar = reverseArguments( foo );

var out = foo( 1, 2, 3 );
// returns [ 1, 2, 3 ]

out = bar( 1, 2, 3 );
// returns [ 3, 2, 1 ]

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.