understand self for attr_accessor class method

Question

class Test
  class << self
    attr_accessor :some

    def set_some
      puts self.inspect
      some = \'some_data\'
    end
    def get_some
      puts sel         


        

Answer 1

in the first method

def set_some
  puts self.inspect
  some = 'some_data'
end

some is a local variable.. its not the same as @some that is a instance variable (in this case a class instance variable) so the value disappears when the method ends.

if you want to call the setter method some or set @some to something then do this

@some = 'some_data'

or

self.some = 'some_data'

in the second method

def get_some
  puts self.inspect
  self.some
end

your calling the method some. which returns the instace variable @some.. and since at this point @some has no value.. returns nil..