CODEWITHSUNDEEP
ruby
mko
mko

Reputation: 22044

how to access variables in the "default" scope

how to access the var in the "default" scope in other class definition , do something like this?

var = 1

class MyClass
def self.show
var
end

MyClass.show #=> 1

and BTW I notice the self in the "default" scope return main, what's this?

Upvotes: 1

Views: 94

Answers (2)

Koraktor
Koraktor

Reputation: 42903

It's not possible. Variables defined like var = ... are always local variables.

Defining a global variable is done by $var = ....

Another more hacky approach would be defining an instance variable (@var = ...), but this would require you to somehow get the main instance into your MyClass.show which doesn't seem to be worth the work.

Upvotes: 0

Denis de Bernardy
Denis de Bernardy

Reputation: 78423

I'm sure there's a better way, but being new to Ruby, I'd use $var instead of var. Doing so makes it global. :-)

Upvotes: 3

Related Questions