for each loop

`for each` loop, also known as `for in` loop, is a loop structure used in many programming languages to iterate over elements of a collection or sequence. Its syntax usually involves the `for` keyword followed by a variable name, the `in` keyword, and the collection to be iterated over.

For example, in Python, the `for each` loop is written as:

for element in collection:
    # do something with element

In this loop, `element` is a variable that takes on each value in `collection` in turn, and the loop body is executed once for each element in the collection.

The `for each` loop is often used when working with arrays, lists, or other data structures that contain multiple items. It provides a convenient way to process each item in the collection without having to manually iterate over it using an index variable or pointer.