Wild question - anyone used the GHC compiler before?

[MrRalphMan]

Hi all,

 

I've got a small program that has been written in Haskell and am using the GHC compiler to run it in interactive mode.

 

Basically it runs in a DOS window, but the issue is that it generates more output then the buffer can hold. Now I'm not sure how I can point the output to a file, to capture all the output.

 

Anyone got an idea?

 

Paul.

[Hermit]

I've never played with Haskell, but since it's in a DOS window could you redirect the output to a file with '> file' at the end of the command? Like...

 

ghc foo > foo.txt

[MrRalphMan]

Although it's a DOS window, it's running it's EXE file within it, so that doesn't work..

 

I open the window from the Start Menu and then load the source file into it, then :main to run it.

[Hermit]

Ah, I see. I guess there is a way to run it straight from a command line, but then you wouldn't have debugging.

 

So alternatively, you could set up the redirection at the start of your program. Looking around I found this example, which uses pipes and 'fdToHandle': http://book.realworldhaskell.org/read/systems-programming-in-haskell.html

 

So maybe something like:

  outfile 
  stdouthdl 

I'm not sure if there is a function called createFile, or what it's arguments would be, in Haskell, but you can probably guess what I'd expect it to do!

[MrRalphMan]

Right, sorted this.. whoopy...

 

I compiled it using

 

ghc --make test.hs -o test

 

This created the .exe file, then I just redirected the output of this with the standard DOS command as above.

 

Now all I need to do is run the True Crypt cracking program to hopefully find the password to my TC file.

 

Cheers though.