Re: [Haskell-cafe] Looking at program execution
[EMAIL PROTECTED]:~cat test.hs import Debug.Trace foo = foldl (\first second - (trace ( first: ++ ( show first) ) first) + (trace ( second: ++ (show second) ) second) ) 0 [1,2,3] bar = foldl (+) traceIt x = trace (\nTraceIt:\n++show x++\n) x [EMAIL PROTECTED]:~ghc -e foo test.hs first: 0 second: 1 first: 1 second: 2 first: 3 second: 3 6 [EMAIL PROTECTED]:~ hope this helps. Ian Duncan [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 08/16/2007 08:20 PM To haskell-cafe@haskell.org cc Subject [Haskell-cafe] Looking at program execution Is there any way to view the steps that a haskell program goes through step by step? I'm thinking something similar to what I've seen in things I've been reading. For example: foldl (+) 0 [1..10] = (0+1) = ((0+1)+2) = (((0+1)+2)+3) = etc. I've seen these sorts of line-by-line execution steps, but I was curious if there was any way to simply type in a function and its arguments and have ghci or hugs or something print out this sort of visual representation of what's going on. Anyone know of something like this? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe --- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Looking at program execution
or actually just... [EMAIL PROTECTED]:~cat test.hs import Debug.Trace foo = foldl (\first second - trace ( ( show first) ++ (+) ++ (show second ) ) ( first + second) ) 0 [1,2,3] [EMAIL PROTECTED]:~ghc -e foo test.hs 0+1 1+2 3+3 6 [EMAIL PROTECTED]:~ is probably better Thomas Hartman [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 08/17/2007 10:52 AM To haskell-cafe@haskell.org, [EMAIL PROTECTED] cc Subject Re: [Haskell-cafe] Looking at program execution [EMAIL PROTECTED]:~cat test.hs import Debug.Trace foo = foldl (\first second - (trace ( first: ++ ( show first) ) first) + (trace ( second: ++ (show second) ) second) ) 0 [1,2,3] bar = foldl (+) traceIt x = trace (\nTraceIt:\n++show x++\n) x [EMAIL PROTECTED]:~ghc -e foo test.hs first: 0 second: 1 first: 1 second: 2 first: 3 second: 3 6 [EMAIL PROTECTED]:~ hope this helps. Ian Duncan [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 08/16/2007 08:20 PM To haskell-cafe@haskell.org cc Subject [Haskell-cafe] Looking at program execution Is there any way to view the steps that a haskell program goes through step by step? I'm thinking something similar to what I've seen in things I've been reading. For example: foldl (+) 0 [1..10] = (0+1) = ((0+1)+2) = (((0+1)+2)+3) = etc. I've seen these sorts of line-by-line execution steps, but I was curious if there was any way to simply type in a function and its arguments and have ghci or hugs or something print out this sort of visual representation of what's going on. Anyone know of something like this? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe --- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe --- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Looking at program execution
On 8/16/07, Ian Duncan [EMAIL PROTECTED] wrote: Is there any way to view the steps that a haskell program goes through step by step? I'm thinking something similar to what I've seen in things I've been reading. For example: foldl (+) 0 [1..10] = (0+1) = ((0+1)+2) = (((0+1)+2)+3) = etc. I've seen these sorts of line-by-line execution steps, but I was curious if there was any way to simply type in a function and its arguments and have ghci or hugs or something print out this sort of visual representation of what's going on. Anyone know of something like this? You probably want to check out Hat: http://www.haskell.org/hat/ I've only used it a bit myself but I think it provides some of the features you're looking for. -Brent ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
