Ruby integers are objects of class Fixnum or Bignum. The Fixnum and Bignum classes represent integers of differing sizes. Both classes descend from Integer (and therefore Numeric). The floating-point numbers are objects of class Float, corresponding to the native architecture's double data type.
Comments - Anything following an unquoted #, to the end of the line on which it appears, is ignored by the interpreter. Also, to facilitate large comment blocks, the ruby interpreter also ignores anything between a line starting with =begin and another line starting with =end
Ruby has been described as an absolutely pure object-oriented scripting language and a genuine attempt to combine the best of everything in the scripting world.
Yukihiro Matsumoto (or "Matz" as he's known online) is the creator of Ruby