ID : 16205
viewed : 179
Tags : stringhaskellintcastingstring
The opposite of read is show.
Prelude> show 3 "3" Prelude> read $ show 3 :: Int 3
Anyone who is just starting with Haskell and trying to print an Int, use:
module Lib ( someFunc ) where someFunc :: IO () x = 123 someFunc = putStrLn (show x)
An example based on Chuck's answer:
myIntToStr :: Int -> String myIntToStr x | x < 3 = show x ++ " is less than three" | otherwise = "normal"
Note that without the show the third line will not compile.
You can use show:
What I want to add is that the type signature of show is the following:
show :: a -> String
And can turn lots of values into string not only type Int.
Here is a reference: