The out keyword in generics is used to denote that the type T in the interface is covariant.<\/p>\n
check following code.<\/p>\n
\r\n\r\n class Fruit { }\r\n\r\n class Banana : Fruit { }\r\n\r\n interface ICovariantSkinned { }\r\n\r\n interface ISkinned { }\r\n\r\n class A : ISkinned { }\r\n class B : ICovariantSkinned { }\r\n\r\n public static void Main()\r\n {\r\n ISkinned a1 = new A();\r\n ISkinned a = a1; \/\/ compiling error happens here\r\n\r\n ICovariantSkinned b1 = new B();\r\n ICovariantSkinned b = b1; \/\/ compiling passed\r\n }\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"The out keyword in generics is used to denote that the type T in the interface is covariant. check following code. class Fruit { } class Banana : Fruit { } interface ICovariantSkinned { } interface ISkinned { } class … Continue reading