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Underscore.js _.rCurry() Method

  • Last Updated : 18 Sep, 2020

The Underscore.js _.rCurry() method returns a curried version of the given function where arguments are processed from right to left.

Syntax:

_.rCurry( fun )

Parameters: This method takes a single parameter as listed above and discussed below:

  • fun: This is the given function passed as parameter.

Return Value: This method returns a curried function.

Note: To execute the below examples, you have to install the underscore-contrib library by using this command prompt and execute the following command.



npm install underscore-contrib

Example 1: 




// Defining underscore contrib variable
var _ = require('underscore-contrib'); 
  
// Function
function div(a, b, c) {
    return a/b/c;
}
  
var curried = _.rCurry(div);
  
console.log("Curried division is :"
    curried(2)(4)(16));

Output:

Curried division is : 2

Example 2:




// Defining underscore contrib variable
var _ = require('underscore-contrib'); 
  
// Function
function div(a, b, c, d) {
    return a-b-c-d;
}
  
var curried = _.rCurry(div);
  
console.log("Curried Subtraction is :"
    curried(2)(4)(16)(44));

Output: 

Curried Subtraction is : 22

Example 3: Arguments are reversed as shown below:




// Defining underscore contrib variable
var _ = require('underscore-contrib'); 
  
// Function
function div(a, b, c) {
    return ("a="+a+" and b="+b+" and c="+c);
}
  
var curried = _.rCurry(div);
  
console.log(curried("a")("b")("c"));

Output: 

a=c and b=b and c=a



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