The :l
or :load
command type-checks and loads a file.
$ echo "f = putStrLn \"example\"" > example.hs
$ ghci
GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help
ghci> :l example.hs
[1 of 1] Compiling Main ( example.hs, interpreted )
Ok, modules loaded: Main.
ghci> f
example