Linked by Rüdiger Klaehn on Thu 5th Aug 2004 05:00 UTC
One of the most awaited features of Microsoft .NET 2.0 is generics. Generics promise to increase type safety, improve performance, reduce code duplication and eliminate unnessecary casts. The most obvious application of generics in the framework class library are the generic collections in the new System.Collections.Generic namespace. Much has been written about those, but they are not the topic of this article.
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What about the Eiffel way?
They do stuff like:
class interface HASHED_SET[E->HASHABLE]
-- etc.
end
meaning that HASHED_SET is generic over E, and E has to inherit from HASHABLE. This is the simplest/cleanest syntax for constrained genericity I have encountered.