Generic type inference should work like it does in C#. I’ll get some more tests in there and get Jimmy to update the docs.
JD From: ironruby-core-boun...@rubyforge.org [mailto:ironruby-core-boun...@rubyforge.org] On Behalf Of Ryan Riley Sent: Thursday, February 11, 2010 9:56 AM To: ironruby-core@rubyforge.org Subject: Re: [Ironruby-core] Calling a C# method with a byref parameter On what types will IR be able to infer the types? Is that documented on the site and I just didn't see it? Ryan Riley On Thu, Feb 11, 2010 at 9:55 AM, Jim Deville <jdevi...@microsoft.com<mailto:jdevi...@microsoft.com>> wrote: That call actually should (usually) be able to infer the type. Please file a bug on codeplex that Generic Type inference isn’t working with ByRef types. JD From: ironruby-core-boun...@rubyforge.org<mailto:ironruby-core-boun...@rubyforge.org> [mailto:ironruby-core-boun...@rubyforge.org<mailto:ironruby-core-boun...@rubyforge.org>] On Behalf Of Shay Friedman Sent: Thursday, February 11, 2010 6:53 AM To: ironruby-core@rubyforge.org<mailto:ironruby-core@rubyforge.org> Subject: Re: [Ironruby-core] Calling a C# method with a byref parameter You should call generic methods a bit differently. The next code works: ret_val = c.method(:do_something_else).of(String).call(str) Shay. -------------------------------------------------------- Shay Friedman | .NET Technologies Expert | Author of IronRuby Unleashed | Sela Technology Center Blog: http://IronShay.com | Twitter: http://twitter.com/ironshay On Thu, Feb 11, 2010 at 4:44 PM, Michael Erasmus <michaeleras...@gmail.com<mailto:michaeleras...@gmail.com>> wrote: Thanks Shay. OK your code works. But my trouble seems to come in with the Generic method. When I do: public class Class1 { public string DoSomething(ref string test) { test = test + "tamtamtam"; return "return value"; } public string DoSomethingElse<T>(ref T test) { return test.ToString(); } } and then call it from IR: >>> c = TestClass::Class1.new => TestClass.Class1 >>> c.do_something("Bla") => ['return value', 'Blatamtamtam'] >>> c.do_something_else("Bla") Microsoft.Scripting.Core:0:in `Bind': Expression of type 'IronRuby.Builtins.Muta bleString&' cannot be used for parameter of type 'IronRuby.Builtins.MutableStrin g' of method 'System.String DoSomethingElse[MutableString](IronRuby.Builtins.Mut ableString ByRef)' (ArgumentError) from Microsoft.Scripting.Core:0:in `BindCore' from :0 On Thu, Feb 11, 2010 at 4:12 PM, Shay Friedman <shay.fried...@gmail.com<mailto:shay.fried...@gmail.com>> wrote: It returns another return value with the new ref value. For example, if you have the next c# class: public class Class1 { public string DoSomething(ref string test) { test = test + "tamtamtam"; return "return value"; } } This is the IronRuby code you can write to use it: >>> require 'c:\dev\TestApps\TestClass\TestClass\bin\Debug\TestClass.dll' => true >>> c = Class1.new => TestClass.Class1 >>> str = "hello" => "hello" >>> result = c.do_something(str) => ['return value', 'hellotamtamtam'] Pay attention that the result variable is an array that contains the method return value as the first item and the ref value as the second parameter. Shay. -------------------------------------------------------- Shay Friedman | .NET Technologies Expert | Author of IronRuby Unleashed | Sela Technology Center Blog: http://IronShay.com | Twitter: http://twitter.com/ironshay On Thu, Feb 11, 2010 at 3:44 PM, Michael Erasmus <michaeleras...@gmail.com<mailto:michaeleras...@gmail.com>> wrote: Hi Everyone, I'm trying to write a IronRuby script that interops with a a .NET assembly written in C#. It has a class that derives from a base class in the .NET assembly. One of the base class protected methods looks like this: protected void OnNotifyPropertyChanged<T>(string name, ref T localmember, T value) { ...... } I can't for the life of me figure out how to call this method from IR in my derived class. The documentation mentions that you can call out parameters without using them as arguments, but I can't seem to find anything about ref params. If I just try calling the method like this: OnNotifyPropertyChanged(property_name, value, value) I get this error: Microsoft.Scripting.Core:0:in `Bind': Expression of type 'IronRuby.Builtins.Muta bleString&' cannot be used for parameter of type 'IronRuby.Builtins.MutableStrin g' of method 'Void #base#OnNotifyPropertyChanged[MutableString](System.String, I ronRuby.Builtins.MutableString ByRef, IronRuby.Builtins.MutableString)' (Argumen tError) from Microsoft.Scripting.Core:0:in `BindCore' from ./dynamic_event_item.rb:22:in `method_missing' from :0 Am I missing something? Thanks Michael Erasmus _______________________________________________ Ironruby-core mailing list Ironruby-core@rubyforge.org<mailto:Ironruby-core@rubyforge.org> http://rubyforge.org/mailman/listinfo/ironruby-core _______________________________________________ Ironruby-core mailing list Ironruby-core@rubyforge.org<mailto:Ironruby-core@rubyforge.org> http://rubyforge.org/mailman/listinfo/ironruby-core _______________________________________________ Ironruby-core mailing list Ironruby-core@rubyforge.org<mailto:Ironruby-core@rubyforge.org> http://rubyforge.org/mailman/listinfo/ironruby-core _______________________________________________ Ironruby-core mailing list Ironruby-core@rubyforge.org<mailto: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
