[Haskell-cafe] Haskell User Group Hamburg - Meeting on 9th Feb.

2012-01-31 Thread Andreas Baldeau
datastructures in Haskell and give some introduction into amortized O(1) queues and Tries. So if you are interested to come have a look at http://www.doodle.com/da9tr6zeynmcq3z6 (german). Further announcements will be made via Twitter, so you may want to follow https://twitter.com/hug_hh. Andreas

Re: [Haskell-cafe] ANN: EclipseFP 2.1.0 released

2011-09-03 Thread Andreas Baldeau
Hi there, I wanted to give the 2.1.0 version a try, so I followed the install instructions on the website and downloaded one of the available Eclipse packages (I chose "Eclipse IDE for JavaScript Web Developers"). Installing EclipseFP then gave me the following error: > Cannot complete the instal

Re: [Haskell-cafe] GHC optimizations and unsafePerformIO - Was: Data.Typeable TypeRep Ord instance.

2011-01-02 Thread Andreas Baldeau
On 13:04 Sat 01 Jan , Felipe Almeida Lessa wrote: > But, if you want to have a strang Ord instance, then why not have a > strange unsafeTypeRepKey :: TypeRep -> Int? Yes, that would be nice. But only if this really helps the compiler with optimising the code. Otherwise one could easily use uns

[Haskell-cafe] GHC optimizations and unsafePerformIO - Was: Data.Typeable TypeRep Ord instance.

2011-01-01 Thread Andreas Baldeau
Thinking about this there might be one problem: Without having looked further into this I think perfomance might not be as expected. Using unsafePerformIO affects ghc's optimzations, doesn't it? So I wonder if it's a good idea (from a performance point of view) to use this. >

Re: [Haskell-cafe] Data.Typeable TypeRep Ord instance.

2010-12-29 Thread Andreas Baldeau
On 01:08 Sun 05 Dec , Serguey Zefirov wrote: > Why TypeRep does have equality and doesn't have ordering? > > It would be good to have that. I think the problem is, that it's hard to give an ordering that stays the same for all runs of your program. If you don't need this property you could us