Okay, just posted a rough first stab at the topic. This is all generic delegates, too; I haven't bothered with plain old generics. :) Please let me know if you have any feedback. I will add the stuff Tomas noted above when I get a chance a little later.
http://ironruby.net/Documentation/.NET/Delegates <http://ironruby.net/Documentation/.NET/Delegates> Ryan Riley Email: ryan.ri...@panesofglass.org LinkedIn: http://www.linkedin.com/in/ryanriley Blog: http://wizardsofsmart.net/ Twitter: @panesofglass Website: http://panesofglass.org/ On Wed, Feb 3, 2010 at 9:01 AM, Ryan Riley <ryan.ri...@panesofglass.org>wrote: > Thanks, Ivan. That's awesome ... that's just like F#. I should have > realized it would be that simple. I'll post this to the Delegates section of > the .NET interop page on the wiki, since it currently doesn't exist. > > Also, I noticed you alluded to something similar in IronRuby in Action > where you talk about LightSpeed, but I couldn't find anything in the MEAP > copy I have. If I am able to spin up a few LINQ samples (probably Rx, Pfx, > and/or XLinq), I'll shoot them your way, if you are interested. > > Cheers! > > Ryan Riley > > Email: ryan.ri...@panesofglass.org > LinkedIn: http://www.linkedin.com/in/ryanriley > Blog: http://wizardsofsmart.net/ > Twitter: @panesofglass > Website: http://panesofglass.org/ > > > On Tue, Feb 2, 2010 at 11:40 PM, Ivan Porto Carrero < > i...@whiterabbitconsulting.eu> wrote: > >> just pass your block to the constructor of a delegate and you should be >> good to go >> >> Action.new { more_work_here } >> --- >> Met vriendelijke groeten - Best regards - Salutations >> Ivan Porto Carrero >> Blog: http://flanders.co.nz >> Twitter: http://twitter.com/casualjim >> Author of IronRuby in Action (http://manning.com/carrero) >> >> >> >> >> On Tue, Feb 2, 2010 at 11:38 PM, Ryan Riley >> <ryan.ri...@panesofglass.org>wrote: >> >>> That's fantastic, Tomas, thanks! Is there any way to pass a block, >>> lambda, or Proc into the slot for the delegate, or perhaps a way to create a >>> .NET delegate (or Expression) from a block, lambda, or Proc? >>> >>> Thanks, >>> >>> Ryan Riley >>> >>> Email: ryan.ri...@panesofglass.org >>> LinkedIn: http://www.linkedin.com/in/ryanriley >>> Blog: http://wizardsofsmart.net/ >>> Twitter: @panesofglass >>> Website: http://panesofglass.org/ >>> >>> >>> On Tue, Feb 2, 2010 at 1:36 AM, Tomas Matousek < >>> tomas.matou...@microsoft.com> wrote: >>> >>>> Actually, you can add Ruby methods to List<T> … IronRuby type system >>>> does some magic for you J: >>>> >>>> >>>> >>>> >>> include System::Collections::Generic >>>> >>>> => Object >>>> >>>> >>> List[Fixnum].included_modules >>>> >>>> => [System::Collections::Generic::List[T], >>>> System::Collections::Generic::IList[Fixnum], >>>> System::Collections::Generic::IList[T], >>>> System::Collections::Generic::ICollection[Fixnum], >>>> System::Collections::Generic::ICollection[T], >>>> System::Collections::Generic::IEnumerable[Fixnum], >>>> System::Collections::Generic::IEnumerable[T], >>>> System::Collections::IEnumerable, Enumerable, System::Collections::IList, >>>> System::Collections::ICollection, System::Collections::Generic, Kernel] >>>> >>>> >>>> >>>> As you can see the List<> generic type definition is treated as a module >>>> that is mixed in each of its instantiations. Although there are no >>>> predefined methods on it you can open it and add some. First we need to get >>>> Ruby class for List<T>. If you index System.Collections.Generic.List by a >>>> fixnum instead of a class/module you’ll get the generic definition of arity >>>> 1. Let’s name it ListOfT: >>>> >>>> >>>> >>>> >>> ListOfT = List[1] >>>> >>>> >>>> >>>> And then we can open it up: >>>> >>>> >>>> >>>> >>> module ListOfT >>>> >>>> ... def size >>>> >>>> ... count >>>> >>>> ... end >>>> >>>> ... end >>>> >>>> => nil >>>> >>>> >>> l = List[Fixnum].new >>>> >>>> => [] >>>> >>>> >>> l.add(1) >>>> >>>> => nil >>>> >>>> >>> l.add(2) >>>> >>>> => nil >>>> >>>> >>> l.size >>>> >>>> => 2 >>>> >>>> >>>> >>>> Tomas >>>> >>>> >>>> >>>> >>>> >>>> *From:* ironruby-core-boun...@rubyforge.org [mailto: >>>> ironruby-core-boun...@rubyforge.org] *On Behalf Of *Orion Edwards >>>> *Sent:* Monday, February 01, 2010 6:31 PM >>>> *To:* ironruby-core@rubyforge.org >>>> *Subject:* Re: [Ironruby-core] A nicer syntax for generic extension >>>> methods >>>> >>>> >>>> >>>> IIRC you can open "concrete" generics, but not "open" ones: In plain >>>> english this means you can add methods to List<string> but not List<T>. >>>> >>>> >>>> >>>> This is essentially because List<T> isn't a real type in the CLR, it's >>>> basically some metadata that can be used to build a real type when the T is >>>> supplied. >>>> >>>> >>>> >>>> You could as an alternative add methods to the underlying non-generic >>>> IEnumerable interface, but then you'd have to do some run-time reflection >>>> to >>>> figure out that your List is actually a List<string>... This is probably >>>> not >>>> nice. >>>> >>>> >>>> >>>> In theory when CLR4 lands and has support for co/contra variant >>>> generics, List<object> should match List<string> and everything else, but I >>>> don't know if IronRuby would also work for this? >>>> >>>> >>>> >>>> Good luck >>>> >>>> On Tue, Feb 2, 2010 at 7:52 AM, Ryan Riley <ryan.ri...@panesofglass.org> >>>> wrote: >>>> >>>> I have been trying to figure out how to Rubify generic extension methods >>>> for use with the likes of Rx, Open XML SDK, etc. Ivan went over it a bit >>>> with me this weekend, but I'm still having difficulty including a module >>>> within a .NET type. Is that even possible? >>>> >>>> >>>> >>>> ... >>>> >>>> >>>> >>>> The questions I'm not able to answer are: >>>> >>>> 1. Can I somehow open up a .NET class, say >>>> System::Collections::Generic::List[T] and include the >>>> EnumerableExtensions? >>>> So far, I'm finding that's a no. >>>> 2. How do I hook in the included(base) method above? I'm assuming >>>> that's a one-time call, but I don't see anywhere that it's called when a >>>> module is included. Do I need to use a before_filter or perform that >>>> action >>>> at the beginning of the linq_select method? >>>> >>>> >>>> >>>> Thanks! >>>> >>>> >>>> Ryan Riley >>>> >>>> Email: ryan.ri...@panesofglass.org >>>> LinkedIn: http://www.linkedin.com/in/ryanriley >>>> Blog: http://wizardsofsmart.net/ >>>> Twitter: @panesofglass >>>> Website: http://panesofglass.org/ >>>> >>>> _______________________________________________ >>>> Ironruby-core mailing list >>>> Ironruby-core@rubyforge.org >>>> http://rubyforge.org/mailman/listinfo/ironruby-core >>>> >>>> >>>> >>>> _______________________________________________ >>>> Ironruby-core mailing list >>>> Ironruby-core@rubyforge.org >>>> http://rubyforge.org/mailman/listinfo/ironruby-core >>>> >>>> >>> >>> _______________________________________________ >>> Ironruby-core mailing list >>> Ironruby-core@rubyforge.org >>> http://rubyforge.org/mailman/listinfo/ironruby-core >>> >>> >> >> _______________________________________________ >> Ironruby-core mailing list >> Ironruby-core@rubyforge.org >> http://rubyforge.org/mailman/listinfo/ironruby-core >> >> >
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