From: "Imobach González Sosa" <imodev@...>
Date: 2004-01-30T05:44:26+09:00
Subject: Checking the parameters "type"

Hi all,

I've trying to find out how to check the class of a parameter. Right, I 
talking about this:

class TestClass
	# arg1 must be String instance
	def myMethod(arg1, arg2)
		# Code, code and more code.
	end
end

I think that I could solve in this way:

class TestClass
	# arg1 must be a String instance
	def myMethod(arg1, arg2)
		if not arg1.kind_of?(String)
			# Error! Some code must be added!
		end
	end
end

Right, we are going to suppose now that I want to add an Integer as attribute 
(myAttribute):

class TestClass
	attr_writer :myAttribute
	...
end

This attribute must be writable. But, there's a little trouble:
How could I assure that the parameter passed to myAttribute= method is 
Integer? Must I implement the method by myself?

class TestClass
	def myAttribute=(value)
		if not myAttribute
	end
end

Can it be automatized in some way?

Thank you all very much!

--
Imobach Gonz�lez Sosa
imodev@softhome.net
osoh@jabber.org