Hello, Today I was writing some code which uses Method#to_proc but I've encountered a few issues. The following line throws a NotImplementedException: proc = 0.method(:to_s).to_proc I took a look at the source code of the ToProc method of MethodOps and there's a comment which states that creating Procs out of CLR methods is basically not yet supported. OK, so it seems reasonable given that, as far as I understand, built-in library methods actually are CLR methods internally. Now, what if I try to create procs out of methods defined in ruby? class Fixnum alias :__to_s :to_s def to_s self.__to_s end end proc = 0.method(:to_s).to_proc The original Fixnum#to_s has been aliased and Fixnum#to_s now responds to a method defined at runtime in ruby, but then I get the following InvalidCastException: C:\Sviluppo\ironruby\SVN\trunk\src\IronRuby.Libraries\Builtins\MethodOps.cs:63:in `to_proc': Unable to cast object of type 'System.Func`3[System.Object,IronRuby.Builtins.Proc,System.Object]' to type 'IronRuby.Runtime.Calls.BlockCallTarget0'. (System::InvalidCastException) from :0 This exception is raised in the Create method of BlockDispatcher. Should I file a bug? Or is this totally expected to happen because Method#to_proc is still incomplete / in its early stages (if so, the reported issue could fall into this bug report http://is.gd/fazo)?
on 2009-01-10 14:17
on 2009-01-10 18:49
Could you please add your comment to bug #20297? Thanks, Tomas