Haskell: Converting Int to String

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:

show 3

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.

For example:

show [1,2,3]

Here is a reference:

https://hackage.haskell.org/package/base-4.14.1.0/docs/GHC-Show.html#v:show

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