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comp.lang.ruby

Global constants

Kless

8/18/2008 8:20:00 AM

I want set up some constants that can be accesed since another
classes.

Which is the best way? Using a singleton to access to variables? (as
if were global vars.)?
2 Answers

Michael Morin

8/18/2008 9:19:00 AM

0

Kless wrote:
> I want set up some constants that can be accesed since another
> classes.
>
> Which is the best way? Using a singleton to access to variables? (as
> if were global vars.)?
>

You can use a module for this. The classes don't necessarily have to be
in the module either, if outside the module they can address the
constant as MyModule::CONSTANT or the classes can include MyModule if it
makes sense to do so.

module MyModule
CONSTANT = "test"

class MyClass1
def print_test
puts CONSTANT
end
end

class MyClass2
def say_something
puts CONSTANT
end
end
end

MyModule::MyClass1.new.print_test
MyModule::MyClass2.new.say_something

--
Michael Morin
Guide to Ruby
http://ruby....
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Kless

8/18/2008 5:00:00 PM

0

Thank you for your help and the fast reply.

I come from Python, a great language, but I'm loving Ruby.