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How to Access Items in a Set in TypeScript

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How to Access Items in a Set in TypeScript ?

Answer

To access items in a Set in TypeScript, you can use methods like forEach to iterate over the set or has to check for item existence.

✐ Examples

1 Iterate Over Items in a Set

In this example,

We create a Set named fruitSet with some initial values.
We use the forEach method to iterate over each item in the set.
Within the forEach callback function, we can perform operations on each item.

TypeScript Program

let fruitSet: Set<string> = new Set(['Apple', 'Banana', 'Cherry']);

fruitSet.forEach((item) => {
    console.log(item);
});

Output

Apple
Banana
Cherry

2 Check if Set Contains an Item

In this example,

We create a Set named numberSet with some initial values.
We use the has method to check if an item exists in the set.
The has method returns true if the item is in the set, otherwise false.

TypeScript Program

let numberSet: Set<number> = new Set([1, 2, 3, 4, 5]);

let containsThree: boolean = numberSet.has(3);
console.log('Set contains 3:', containsThree);

Output

Set contains 3: true

Summary

In this tutorial, we learned How to Access Items in a Set in TypeScript language with well detailed examples.

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