Check if string starts with other string in Haskell

Question

I'd like to know whether my string starts with another string. For example:

startsWith "(" "(test string)" == True

Is there such a function that comes with Haskell?

Answer 1

Since strings are lists of characters, we can import Data.List and use the general function isPrefixOf:

isPrefixOf :: Eq a => [a] -> [a] -> Bool

Example:

Prelude Data.List> isPrefixOf "abc" "abcxyz"
True