Lodash _.isSet() Method

Lodash _.isSet() method is used to find whether the given value is classified as a Set object or not. It returns True if the given value is a set. Otherwise, it returns false.  

Syntax:

_.isSet(value)

Parameters:

This method accepts a single parameter as mentioned above and described below:

• value: This parameter holds the value to check.

Return Value:

• This method returns true if the value is a set, else false.

Example 1: In this example, the code creates an array of size 2, fills it with the value 10, and then checks if the array is a Set object using the _.isSet() method.

Here, const _ = require(‘lodash’) is used to import the lodash library into the file.

// Requiring the lodash library  
const _ = require("lodash");  

// Creating a array of size 2 
var obj= new Array(2);

// Filling array with value 10 
obj.fill(10); 
    
// Use of _.isSet() method 
console.log(_.isSet(obj)); 

Output:

false

Example 2: In this example, the code uses the Lodash library to check whether the given values are Set objects using the _.isSet() method.

// Requiring the lodash library  
const _ = require("lodash");  
    
// Use of _.isSet() method 
console.log(_.isSet(new Set)); 
console.log(_.isSet(new WeakSet)); 

Output:

true
false

Note: This code will not work in normal JavaScript because it requires the library lodash to be installed.