Rust Iterator Methods: A Closer Look at the Map Function

In Rust, the map function is a higher-order function that is commonly used to transform the elements of an iterable (like a vector or an iterator) by applying a closure or function to each element. The map function is a method on the Iterator trait, and it takes a closure as an argument, which is applied to each element of the iterator, producing a new iterator with the transformed elements.

In this example, we create a vector of integers and use the map function to create a new vector with each element squared. The closure square is applied to each element of the iterator, and the transformed elements are collected into a new vector using the collect function. The original and transformed vectors are then printed.