Understanding the Haskell as-pattern

Question

I\'m reading through Real World Haskell, and am trying to understand the as-pattern.

From the book (Chapter 4):

suffixes :: [a] -> [[a]]
suffixes          


        

Answer 1

xs' would be bound to the string "ello".

xs would be bound to the string "hello".

The @ pattern lets you give a name to a variable while also matching its structure and possibly giving name to the components.