papply

Partially apply function arguments.

Installation

npm install @stdlib/utils-papply

Usage

var papply = require( '@stdlib/utils-papply' );

papply( fcn[, ...args] )

Partially applies function arguments.

function add( x, y ) {
    return x + y;
}

var add2 = papply( add, 2 );

var sum = add2( 3 );
// returns 5

sum = add2( 7 );
// returns 9

Notes

• The implementation does not set the length of the returned function. Accordingly, the returned function length is always 0.
• The evaluation context is always null.

Examples

var randu = require( '@stdlib/random-base-randu' );
var floor = require( '@stdlib/math-base-special-floor' );
var papply = require( '@stdlib/utils-papply' );

var fcn;
var w;
var t;
var s;
var v;
var i;

function add( x, y, z, w, t, s ) {
    return x + y + z + w + t + s;
}

fcn = papply( add, 5, 4, 3 );

for ( i = 0; i < 100; i++ ) {
    w = floor( randu() * 5 );
    t = floor( randu() * 10 );
    s = floor( randu() * 15 );
    v = fcn( w, t, s );
    console.log( '5+4+3+%d+%d+%d = %d', w, t, s, v );
}

See Also

• @stdlib/utils-papply-right: partially apply function arguments from the right.

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

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.