What's up, RMers?

[kyonides]

And here I come once again to prove you wrong!

At least starting from Ruby 2.7 you can use code like the following:

Code:

instance_variables.each do |var|
  this_var = instance_variable_get(var)
  puts this_var.respond_to?(:dispose)
end

This will easily retrieve the corresponding @variable and let you know whether or not that object really owns a dispose method.
So nope, you don't need to turn variable names into strings. Symbols are good enough for Ruby.