Constant lookup when using namespaces

[nemlet]

Here is an example.

#!/usr/bin/ruby

class A

end

class A::B

def method_one
x = C.new
puts x.blah
end

end

class A::C

def blah
puts "I want this one"
end
end

class C

def blah
puts "this is the wrong one"
end

end

ab = A::B.new
ab.method_one




As you can see when you run it you get the blah out of ::C NOT A::C
which I was expecting. Is there a way to be able to say C.new inside
of A::B and have it check the A:: Namespace first?

 

[Rob Biedenharn]

Here is an example.

#!/usr/bin/ruby

class A

end

class A class B

def method_one
x = C.new
puts x.blah
end
end


end

class A class C

def blah
puts "I want this one"
end end

end

class C

def blah
puts "this is the wrong one"
end

end

ab = A::B.new
ab.method_one




As you can see when you run it you get the blah out of ::C NOT A::C
which I was expecting. Is there a way to be able to say C.new inside
of A::B and have it check the A:: Namespace first?

I don't remember the details of "why", but "class A::C; end" opens the
A:: scope differently from "class A; class C; end; end". When you
make the "class A" namespace explicit, you get the behavior you were
expecting.

-Rob

Rob Biedenharn http://agileconsultingllc.com
(e-mail address removed)