Lodash _.curryRight2() Method

Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, strings, objects, numbers, etc.

The _.curryRight2() method is used to return a curried version of the given function where a maximum of two arguments are processed from right to left.

Syntax:

_.curryRight2( fun )

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

• fun: This is the function that should be used in the curried version.

Return Value: This method returns a curried function.

Note: This method will not work in normal JavaScript because it requires the Lodash contrib library to be installed. The lodash-contrib library can be installed using npm install lodash-contrib –save

Example 1:

Javascript

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Function to curry
function div(a, b) {
    return a / b;
}

// Using the _.curryRight2() method
var curried = _.curryRight2(div);

console.log("Curried division is :",
    curried(4)(32));

Output:

Curried division is : 8

Example 2:

Javascript

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Function to curry
function div(a, b) {
    return a / b;
}

// Using the _.curryRight2() method
var curried = _.curryRight2(div);

console.log("Curried division is :",
    curried(32)(4));

Output: 

Curried division is : 0.125

Example 3:

Javascript

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Function to curry
function sub(a, b) {
    return a - b;
}

// Using the _.curryRight2() method
var curried = _.curryRight2(sub);

console.log("Curried Subtraction is :",
    curried(2)(10));

Output: 

Curried Subtraction is : 8

Example 4:

Javascript

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Function to curry
function div(a, b) {
    return ("a=" + a + " and b=" + b);
}

// Using the _.curryRight2() method
var curried = _.curryRight2(div);

console.log(curried("a")("b"));

Output: 

a=b and b=a