Ruby 2.4 unifies Fixnum and Bignum into IntegerRuby uses Fixnum class for representing small numbers and Bignum class forbig numbers. # Before Ruby 2.41.class #=> Fixnum(2 ** 62).class #=> BignumIn general routine work we don't have to worry about whether the number we aredealing with is Bignum or Fixnum. It's just an implementation detail. Interestingly, Ruby also has Integer class which is superclass for Fixnumand Bignum. Starting with Ruby
