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>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>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> 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 >>> 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
