What are some practical use cases for map and filter functions in programming?

What are some practical use cases for map and filter functions in programming?

Map and filter are powerful functions in programming, especially in functional programming. Map is used to transform data, while filter is used to select specific elements based on a condition.

Can you give me an example of using map?

Sure! For instance, if you have an array of numbers and you want to double each number, you can use map like this: numbers.map(num => num * 2).

And how about filter?

With filter, if you have an array of numbers and you want to get only the even numbers, you can do: numbers.filter(num => num % 2 === 0).

What are some real-world applications of these functions?

Real-world applications include data processing, such as transforming user data in web applications or filtering out invalid entries in datasets.