How to Filter Items of a Set based on a Condition in TypeScript - Step by Step Examples

How to Filter Items of a Set based on a Condition in TypeScript ?

Answer

To filter items of a set based on a condition in TypeScript, you can use the filter() method to create a new set containing only the elements that pass the condition.

✐ Examples

1 Filter Even Numbers from a Set

In this example,

First, we create a Set named numberSet with values {1, 2, 3, 4, 5, 6}.
Next, we use the filter() method on numberSet to create a new Set containing only the even numbers. We provide a function as the argument to filter() that checks if each number is even using the modulo operator %.

TypeScript Program

const numberSet: Set<number> = new Set([1, 2, 3, 4, 5, 6]);
const evenNumbers: Set<number> = new Set([...numberSet].filter(num => num % 2 === 0));
console.log('Even numbers:', evenNumbers);

Output

Even numbers: Set(3) { 2, 4, 6 }

2 Filter Strings Starting with 'A' from a Set

In this example,

First, we create a Set named stringSet with values {'Apple', 'Banana', 'Apricot', 'Orange'}.
Next, we use the filter() method on stringSet to create a new Set containing only the strings starting with 'A'. We provide a function as the argument to filter() that checks if each string starts with 'A' using the startsWith() method.

TypeScript Program

const stringSet: Set<string> = new Set(['Apple', 'Banana', 'Apricot', 'Orange']);
const filteredStrings: Set<string> = new Set([...stringSet].filter(str => str.startsWith('A')));
console.log('Strings starting with A:', filteredStrings);

Output

Strings starting with A: Set(2) { 'Apple', 'Apricot' }

Summary

In this tutorial, we learned How to Filter Items of a Set based on a Condition in TypeScript language with well detailed examples.

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How to Filter Items of a Set based on a Condition in TypeScript - Step by Step Examples

How to Filter Items of a Set based on a Condition in TypeScript ?

Answer

✐ Examples

1 Filter Even Numbers from a Set

TypeScript Program

Output

2 Filter Strings Starting with 'A' from a Set

TypeScript Program

Output

Summary

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