Add gitignore and a multiline function

.gitignore

@@ -0,0 +1,21 @@
+dist
+dist-*
+cabal-dev
+*.o
+*.hi
+*.chi
+*.chs.h
+*.dyn_o
+*.dyn_hi
+.hpc
+.hsenv
+.cabal-sandbox/
+cabal.sandbox.config
+*.prof
+*.aux
+*.hp
+*.eventlog
+.stack-work/
+cabal.project.local
+.HTF/
+.ghc.environment.*

prax1/prax1.hs

@@ -1,3 +1,4 @@
+#!/usr/bin/env runghc
 -- This is a comment
 
 doubleMe x = x * 3
@@ -8,3 +9,15 @@ doubleSmallNumber x = if x <= 100 then doubleMe x else x
 
 -- ' <- uptick is used as convetion to mark lightly modified function
 doubleSmallNumber' x = (if x <= 100 then doubleMe x else x) + 1
+
+-- compile: ghc -dynamic prax1.hs
+-- flag -dynamic is needed under Arch Linux, can be leaved off on ther envs
+
+-- runghc prax1.hs
+-- this also works ↑
+
+-- entrypoint
+main = do
+    putStrLn "Hello World"
+    name <- getLine
+    putStrLn ("Hello " ++ name ++ "!")