Overloading in Ruby is not real "Overloading" because there is no data type declaration in ruby(dynamic typed language) . Ref : http://stackoverflow.com/questions/9373104/why-does-ruby-not-support-method-overloading

overload.rb

def say_hello(name)
	puts "Hi #{name}"
end
# say_hello("devlabs")

def say_hello(name,age)
	puts "Hi #{name} and your age is\n"
	puts age
end
# say_hello("yelinaung",21)


def say_hello(a,b)
	puts a + b
end
# say_hello(20,11)

def say_hello(a,b,c)
	x = [a,b,c]
	x.each do |y|
		puts y
	end
end
# say_hello(1,2,3)
# say_hello("yelinaung",2,3)

def say_hello(mFloat)
	# return is unnecessary here
	# because ruby always return the last value
	return 1.0 + mFloat
end
# say_hello(2.0)

def say_hello(mArray)
	mArray.each do |x|
		puts "Hi #{x}"
	end
end
# i = [1,2,3,4,5]
# say_hello(i)

# Level 6 :P
def say_hello(*args)
	a = []
	a.push(*args)
	a.each do |x|
		puts x
	end
end

# say_hello(1,2,4,5,5,6,7,"yelinaung")
# say_hello("yemonkyaw", "bromance", 1,3,2.0,333333, "yelinaung")

:D very good that is help me in learning Ruby :D