Crappy non-functional code. tried to add a prefix addition to fixnum like the c operator ++<var> and <var>++

prefix_plus.rb

# tried to add a prefix addition to fixnum like the c operator ++<var> and <var>++
# asked by linusoleander on #ruby irc, discussed with apeiros, banisterfiend and My_Hearing 
# as fixnum is a kind of constant, the idea was to store one value but use and display another

class Fixnum
  # there is no intialize method in fixnum so cannot hook @actual_value to initilization
  # also += 1 is a keyword so cannot hook assignment to a variable into the fixnum
  # would have been possible if ruby had a repl (reader macros) like lisp
  def pre_plus
    @actual_value ||= (pre = self)
    #p "pre: #{pre}"
    @actual_value = pre + 1
    pre
  end

  def to_i
    @actual_value ||= self
  end
end

foo = 1
p "foo: #{foo}" #1
p "foo.pre_plus: #{foo.pre_plus}" #1
p "foo: #{foo}" #1
p "foo.to_i: #{foo.to_i}" #2
foo+=1
p "after foo+=1 | to_i  #{foo.to_i.inspect}" #2 - sucks and blows
p "after foo+=1 | inspect  #{foo.inspect}"   #2 - sucks and blows - += works on actual value not to_i value

# Fixnum, NilClass, TrueClass, FalseClass are special in that
# they only have one copy per value and we cannot define singleton methods on them
p "object_id same: #{1.object_id == 1.object_id}" #true

suggestion to wrap it in a class, this is too fragile
foo, bar = 5, 5.pre_plus
p bar.to_to_i