What is the map function in various programming languages?

Can you explain the map function in JavaScript?

Sure! In JavaScript, the map function creates a new array by applying a provided function to each element of the original array.

How does it work in Python?

In Python, the map function applies a specified function to each item of an iterable (like a list) and returns a map object, which can be converted to a list.

What about in Ruby?

In Ruby, the map method (also known as collect) returns a new array containing the results of running the block once for every element in the original array.

Can you give me an example in Java?

Certainly! In Java, you can use the Stream API's map method to transform elements in a collection. For example, list.stream().map(String::toUpperCase).collect(Collectors.toList()) converts all strings in the list to uppercase.