Re: [Haskell-cafe] Hot-Swap with Haskell

Sorry Andy! CC'ing to the rest of -cafe in case anybody notices (I need to stop haskelling so early in the morning...) On Fri, Jul 16, 2010 at 8:59 AM, austin seipp wrote:

You also may like one project I wrote, an IRC bot that used hs-plugins to do hot code reloading (only works on GHC 6.8.) Inspired by lambdabot, it could swap the entire running program as well as its own plugins, on the fly and maintain state pretty successfully. I haven't touched the source code in a long time - it was one of my first bigger Haskell projects after reading Dons paper about yi. I tried a bunch of things with various versions of it.

If I wrote the code again today (providing plugins worked) it would likely be 1/10th the size and more manageable as I have become much better at Haskell, but oh well. Looking over it now though, most of the code is pretty simple. :)

http://code.haskell.org/infinity/src/

On Fri, Jul 16, 2010 at 8:04 AM, Andy Stewart wrote:

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Bartek Ćwikłowski writes:

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Hello Andy,

2010/7/16 Andy Stewart :

...

There are some problems with re-compile solution:

1) You can't save *all* state with some FFI code, such as gtk2hs, you can't save state of GTK+ widget. You will lost some state after re-launch new entry.

For my 2008 GSOC application I wrote a demo app that used hot code reloading and it maintained gtk state just fine. The code (and video) is available at http://paczesiowa.dw.pl/ , it worked in ghc 6.8 and needed hs-plugins, so it won't work now, but the approach should work. Wow, thanks for your hint, i will wait dons fix hs-plugins then try this cool feature..

Thanks,

 -- Andy _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- - Austin

-- - Austin