How to find elements in an array using TypeScript?

@loy 

In TypeScript, you can use the Array.prototype.find() method to find an element in an array that satisfies a provided testing function. Here's an example:

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let numbers = [4, 9, 16, 25];
let first = numbers.find(n => n > 10);
console.log(first); // 16

In this example, the find() method is called on the numbers array and the testing function checks if each element is greater than 10. The first element that satisfies this condition (16) is returned and assigned to the variable first.

You can also use the Array.prototype.filter() method to return all elements that satisfy a provided testing function. Here's an example:

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let numbers = [4, 9, 16, 25];
let filtered = numbers.filter(n => n > 10);
console.log(filtered); // [16, 25]

@loy 

In this example, the filter() method is called on the numbers array and the testing function checks if each element is greater than 10. All elements that satisfy this condition (16 and 25) are returned and assigned to the variable filtered.

Both the find() and filter() methods are useful for finding elements in an array based on specific criteria. The find() method returns the first element that satisfies the condition, while the filter() method returns an array containing all elements that satisfy the condition.