rubyで関数ポインタが使えるのか？

ruby 1.8.7
MacOS 10.8.2

#!/bin/env ruby

class Calcurator
	def initialize(a,b)
		@a=a
		@b=b
	end 
	def add 
		p @a+@b
	end 
	def subRet
		return @a-@b
	end 
	def addValue(c,d)
		p @a+@b+c+d
	end 
	def addValueRet(c)
		return @a+@b+c
	end 
	def addMethod(m)
		return @a+@b+method(m).call
		
	end 
end

class CalcTest
	def exec
		calc=Calcurator.new(2,1)
		calc.method(:add).call			 
		p calc.method(:subRet).call	
		calc.method(:addValue).call(3,4) 
		p calc.method(:addValueRet).call(4)	
		p calc.method(:addMethod).call(:subRet) 
	end 
end

if __FILE__ == $0 then
	CalcTest.new.exec
end

#!/bin/env ruby

class Calcurator

def initialize(a,b)

@a=a

@b=b

end

def add

p @a+@b

end

def subRet

return @a-@b

end

def addValue(c,d)

p @a+@b+c+d

end

def addValueRet(c)

return @a+@b+c

end

def addMethod(m)

return @a+@b+method(m).call

end

class CalcTest

def exec

calc=Calcurator.new(2,1)

calc.method(:add).call

p calc.method(:subRet).call

calc.method(:addValue).call(3,4)

p calc.method(:addValueRet).call(4)

p calc.method(:addMethod).call(:subRet)

end

if __FILE__ == $0 then

CalcTest.new.exec

end

結果

ruby