How to create an Empty Set in TypeScript


How to create an Empty Set in TypeScript ?

Answer

To create an empty set in TypeScript, you can use the Set constructor with no arguments.



✐ Examples

1 Create an Empty Set Using the Set Constructor

In this example,

  1. We use the Set constructor which is a built-in object in TypeScript that allows you to create a set.
  2. We declare a variable named set1 and assign it the result of calling the new Set() constructor with no arguments.
  3. The new Set() constructor creates a new, empty set.
  4. We then print the set1 to the console to verify its contents.

TypeScript Program

let set1: Set<string> = new Set();
console.log('Contents of set1:', set1);

Output

Contents of set1: Set(0) {}

2 Create an Empty Set and Add Elements

In this example,

  1. We use the Set constructor to create an empty set by calling new Set().
  2. We declare a variable named set2 and assign it the result of the new Set() constructor with no arguments.
  3. We add elements to set2 using the add method. For example, we add the strings 'apple' and 'banana'.
  4. We then print the set2 to the console to verify its contents.

TypeScript Program

let set2: Set<string> = new Set();
set2.add('apple');
set2.add('banana');
console.log('Contents of set2:', set2);

Output

Contents of set2: Set(2) { 'apple', 'banana' }

Summary

In this tutorial, we learned How to create an Empty Set in TypeScript language with well detailed examples.




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