Answer Detail: RE: How does nil and false duffer?

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Question: How does nil and false duffer?

August 08, 2007 01:07:28	#1
natchiar	Member Since: Visitor Total Comments: N/A
RE: How does nil and false duffer?
The difference of the methods nil and false is shown by executing nil.methods - false.methods and false.methods - nil.methods. In a Hash, nil cannot be a value, but false can. It is recommened that a method returns true or false if it is a predicate, and a value or nil otherwise. A method with suffix ? is usually a predicate, but some built-in functions are not.