[Haskell-cafe] Haskell Debugging

[Valentin Gjorgjioski]

I'm pretty new in Haskell, few days since I started learning it. I want 
to debu my programs. I'm currently using WinHugs, and I prefer debugger 
for this.

I tried googling and I found Hugs.Observer.

I like it how it works, but still I have one BIG problem with it. It 
doesn't work well with floats.

Following example

import Hugs.Observe

ex8 :: [Float]
ex8 = (observe "after reverse" ) reverse  [10.0,7.0,3.0,0.0,4.0]

gives me

 >ex8
[4.0,0.0,3.0,7.0,10.0]

 >>>>>>> Observations <<<<<<

after reverse
   { \ ($-990871 : $-990888 : $-990905 : $-990922 : $-990939 : [])  -> 
$-990939 : $-990922 : $-990905 : $-990888 : $-990871 : []
   }

Which is not useful. After that I try to install

http://www.haskell.org/hat/

but for installing that I need hmake, and when I try to install hmake, I 
typed first configure -prefix, and then, make.

cd src/hmake;          make HC=ghc BUILDCOMP=ghc all config
make[1]: Entering directory `/cygdrive/E/Haskell/hmake/src/hmake'
Makefile:59: *** target pattern contains no `%'.  Stop.
make[1]: Leaving directory `/cygdrive/E/Haskell/hmake/src/hmake'
make: *** [targets/ix86-CYGWIN_NT-5.1/hmake-ghc] Error 2

as you can see I'm using cygwin.

I'm really stacked here, and I will kindly ask for help.


Thanks,
Valentin


-- 
Valentin Gjorgjioski
Bachelor of Computer Science
Department of Knowledge Technologies, Jozef Stefan Institute
Jamova 39, SI-1000 Ljubljana, Slovenia
Phone:	+386 1 477 3343
Fax:	+386 1 477 3315
Web:	http://kt.ijs.si/ValentinGjorgjioski/
Email: 	Valentin.Gjorgjioski at ijs.si