Last Modified: 2024-09-14 15:32:07Z
1. Try or Install
1.1. Try
In the official Haskell homepage provides the try-it-online repl.
$ nix-shell -p ghc
...
$ ghci
GHCi, version 9.6.4: https://www.haskell.org/ghc/ :? for help
ghci> "Welcome" ++ " " ++ "Ch1keen" ++ " " ++ "Wiki"
"Welcome Ch1keen Wiki"
ghci> "Welcome" ++ " " ++ "to" ++ " " ++ "Ch1keen" ++ " " ++ "Wiki"
"Welcome to Ch1keen Wiki"
ghci>2. Write a simple script and run
ghc command let you compile a script, and run the compiled binary. No need to set up a project.
Let’s write a simple Haskell script, which just prints "Hello World" to the console.
-- Hello.hs
main = putStrLn $ "Hello" ++ " " ++ "World"$ ghc Hello.hs
[1 of 2] Compiling Main ( Hello.hs, Hello.o )
[2 of 2] Linking Hello
$If there were no error, three files will be created, an interface file Hello.hi, an object file Hello.o, and the executable Hello.
Then run the executable as normal.
$ ./Hello
Hello World
$3. Start a new project
3.1. With Stack
Stack is a project manager, provides an isolated environment, and is widely used in nowadays.