Question

class CAR 
   FORD = 1
   GM = 2
   BMW = 3
end

I want to create an array like:

all_cars = [CAR::FORD, CAR::GM, CAR::BMW]
=>[1, 2, 3]

Is there a way I can initialize this array with typing CAR:: for each element, something like

all_cars = %(FORD GM BMW).map {|ele| "CAR::" + ele}
=>["CAR::FORD", "CAR::GM", "CAR::BMW"]

Not want I wanted

Answer 1

%w(FORD GM BMW).map{|x| CAR.class_eval(x)} # => [1, 2, 3]

or

%w(FORD GM BMW).map{|x| eval("CAR::#{x}")} # => [1, 2, 3]