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Understanding Covariance and Contravariance in .NET 4.0

, 12 Sep 2011
A covariant type parameter can be used as the return type of a generic delegate/interface, and contravariant type parameters can be used as input parameter types.
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girijaa
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A Software professional with expertise in developing applications using Microsoft Stack [.Net 2.0/3.0/3.5/4.0] , SQL Server 2005/2008 , Asp.Net [Webforms,MVC] , Entity Framework , WPF , Winforms , Enterprise Library .
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