Re: [Haskell-cafe] Program used for debugging
On Thu, Dec 1, 2011 at 7:40 PM, Yves Parès limestr...@gmail.com wrote: Hey, What do you mostly use for debugging? Simple calls to Debug.Trace.trace? Hpc? Hood? I also wonder about 'type-debugging' Using ghci: For a top level expression: - if it is not compiling I can put in (or remove) a type decl and see how things change. - if it is compiling I can of course :t it But for internal expressions it can be quite hairy to figure out why what haskell thinks is the type of something and what I think dont match. So is there something like type-intellisense for haskell where if one hovers the mouse (maybe over a selection) haskell tells what type it finds there? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Program used for debugging
But for internal expressions it can be quite hairy to figure out why what haskell thinks is the type of something and what I think dont match. ^^ Just give the internal expression a type you know to be wrong, then GHC will display the infered type and say it doesn't match the one you wrote. 2011/12/2 Rustom Mody rustom.m...@parsci.com On Thu, Dec 1, 2011 at 7:40 PM, Yves Parès limestr...@gmail.com wrote: Hey, What do you mostly use for debugging? Simple calls to Debug.Trace.trace? Hpc? Hood? I also wonder about 'type-debugging' Using ghci: For a top level expression: - if it is not compiling I can put in (or remove) a type decl and see how things change. - if it is compiling I can of course :t it But for internal expressions it can be quite hairy to figure out why what haskell thinks is the type of something and what I think dont match. So is there something like type-intellisense for haskell where if one hovers the mouse (maybe over a selection) haskell tells what type it finds there? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Program used for debugging
Hey, What do you mostly use for debugging? Simple calls to Debug.Trace.trace? Hpc? Hood? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Program used for debugging
On 2 December 2011 01:10, Yves Parès limestr...@gmail.com wrote: Hey, What do you mostly use for debugging? Simple calls to Debug.Trace.trace? Hpc? Hood? trace and ghci. -- Ivan Lazar Miljenovic ivan.miljeno...@gmail.com IvanMiljenovic.wordpress.com ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Program used for debugging
On 1 Dec 2011, at 14:10, Yves Parès wrote: Hey, What do you mostly use for debugging? Simple calls to Debug.Trace.trace? Hpc? Hood? Debug.Trace, with some short helpers so dbg x= x displays the value of x, provided x is in Show import Debug.Trace dbg msg x = dbgsh show msg x dbgsh sh msg x = trace (msg++sh x) x cdbg p msg x | p x= dbg msg x | otherwise = x -- if you want to tailor the show: class Dshow t where dshow :: t - String ddbg msg x = dbgsh dshow msg x ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe Andrew Butterfield Tel: +353-1-896-2517 Fax: +353-1-677-2204 Lero@TCD, Head of Foundations Methods Research Group Director of Teaching and Learning - Undergraduate, School of Computer Science and Statistics, Room G.39, O'Reilly Institute, Trinity College, University of Dublin http://www.scss.tcd.ie/Andrew.Butterfield/ ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
