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Haskell is a statically typed, functional, and concurrent programming language with a dynamic range of packages. The show method is used to convert an int value to string .
In Haskell it is also very easiest form of data type which can be used, easy to handle and create as well. String can be created by using double quotes (“”) inside this we can write our string or value that we want string type to be hold for us.
string s = String. Concat(a,b); C#
The shows functions return a function that prepends the output String to an existing String . This allows constant-time concatenation of results using function composition.
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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