@stdlib/utils-uncurry-right
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    0.0.8 • Public • Published

    uncurryRight

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    Transform a curried function into a function invoked with multiple arguments.

    Installation

    npm install @stdlib/utils-uncurry-right

    Usage

    var uncurryRight = require( '@stdlib/utils-uncurry-right' );

    uncurryRight( fcn[, arity][, thisArg] )

    Transforms a curried function into a function invoked with multiple arguments.

    function add( y ) {
        return function add( x ) {
            return x + y;
        };
    }
    
    var fcn = uncurryRight( add );
    
    var sum = fcn( 3, 2 );
    // returns 5

    To enforce a fixed number of parameters, provide an arity argument.

    function add( y ) {
        return function add( x ) {
            return x + y;
        };
    }
    
    var fcn = uncurryRight( add, 2 );
    
    var sum = fcn( 9 );
    // throws <Error>

    To specify an execution context, provide a thisArg argument.

    function addY( y ) {
        this.y = y;
        return addX;
    }
    
    function addX( x ) {
        return x + this.y;
    }
    
    var fcn = uncurryRight( addY, {} );
    
    var sum = fcn( 3, 2 );
    // returns 5

    The function supports providing both an arity and execution context.

    function addY( y ) {
        this.y = y;
        return addX;
    }
    
    function addX( x ) {
        return x + this.y;
    }
    
    var fcn = uncurryRight( addY, 2, {} );
    
    var sum = fcn( 3, 2 );
    // returns 5
    
    sum = fcn( 4 );
    // throws <Error>

    Notes

    • The difference between this function and uncurry is the order in which arguments are applied. This function applies arguments starting from the right.

    Examples

    var fromCodePoint = require( '@stdlib/string-from-code-point' );
    var curryRight = require( '@stdlib/utils-curry-right' );
    var uncurryRight = require( '@stdlib/utils-uncurry-right' );
    
    var uncurried;
    var curried;
    var abcs;
    var out;
    var a;
    var i;
    
    function concat() {
        var len;
        var out;
        var i;
    
        len = arguments.length;
        out = '';
        for ( i = 0; i < len; i++ ) {
            out += arguments[ i ];
            if ( i < len-1 ) {
                out += ',';
            }
        }
        return out;
    }
    
    // Character codes:
    a = 97;
    
    abcs = new Array( 26 );
    for ( i = 0; i < abcs.length; i++ ) {
        abcs[ i ] = fromCodePoint( a + i );
    }
    out = concat.apply( null, abcs );
    // returns 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z'
    
    // Transform `concat` into a right curried function:
    curried = curryRight( concat, 26 );
    
    out = curried;
    for ( i = abcs.length-1; i >= 0; i-- ) {
        out = out( abcs[ i ] );
    }
    console.log( out );
    // => 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z'
    
    // Uncurry a right curried function:
    uncurried = uncurryRight( curried );
    
    out = uncurried.apply( null, abcs );
    // returns 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z'

    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.

    Install

    npm i @stdlib/utils-uncurry-right

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    31

    Version

    0.0.8

    License

    Apache-2.0

    Unpacked Size

    43.7 kB

    Total Files

    9

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser