AlexPrelude

This is a collection of really useful functions. They are mostly aimed towards writing console applications.

For example:

import AlexPrelude

main :: IO ()
main = do
    clear_screen
    print "Hello my name is Alex"
    name <- prompt "What is your name? "
    print ("Hello, " ++ name)
    print "Let me ponder on what I think about your name..."
    sleep 10
    print "It is ridiculous! Why would your parents do that to you!"
    print_banner

As you can see, these functions try to fill in the missing gaps for when you want to write a real application in haskell.

Documentation

prompt :: String -> IO String

Asks a user for some input

sleep :: Int -> IO ()

Wait for a given number of seconds

clear_screen :: IO ()

This clears the screen. Unfortunately, this only works if the terminal has less than 80 rows. If the terminal has more rows, you can just call this a couple of times until the entire screen is cleared.

print_banner :: IO ()

This prints a banner to show that your application was created using AlexPrelude. You are not obliged to use this, but I would be thankful.