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.Func3[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)?