CS_191 Functional Programming
Working with GHCi in the Linux lab 217
Useful emacs commands may be found on the
Emacs Reference Card.
Open a terminal:
click on Linux Chameleon > Applications > scroll right (twice)
choose Terminal Program or 32-bit Terminal Program.
Create a directory where you will keep your Functional Programming
lab work and your coursework. For example, type "mkdir fp1".
Move to the directory fp1 by typing "cd fp1".
- Open the editor emacs by typing "emacs&".
A new window should pop up.
Open a file, for example "test.hs" by typing
in the new emacs window "C-x-f test.hs" ("C-x-f" means pressing
the control key and typing the letters "x" and "f" while
keeping the control key pressed down).
Alternatively, you may ode the drop down menue.
first Haskell definitions (don't forget to save your file).
Start ghci by typing "ghci" in the terminal.
You should get a prompt "Prelude>" indicating that the module Prelude
By typing ":?" you obtain all commands which are
available in ghci.
- Now, by typing ":load test.hs" you load the script and, if
there are no typing errors in your program, you end up
with a prompt "Main>".
- Finally, you may run your first program by calling your definitions
with any inputs.
"lpr test.hs" sends your source code file to the default printer.
Here are the
most essential emacs commands.
Useful commands for handling files and directories in Linux are
available via the Unix Reference
Working with Hugs in the Windows lab 216
Go to the computer science folder in the novell system
and click on the icon Hugs.
Then Hugs will be installed on your account.
Working under Windows on your PC (if you have installed hugs)
You may start hugs just by calling: Start -> Programs -> Hugs98.
Use any editor to produce a file name.hs with your haskell definitions
and store it in the directory hugs98. Then you may proceed as described
above, in the linux case.
Alternatively, you may start winhugs (in the directory hugs98)
which directly comes with an editor. The files are automatically
stored in the right directory.
In case there are any further questions please contact me
or one of the program advisors during the lab classes or write an email to
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Ulrich Berger, Monika Seisenberger, September, 2006