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Are Generics Covariant, Contra-Variant, or Invariant?

April 26, 2017covariant generics invariant

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Are Generics Covariant, Contra-Variant, or Invariant?

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Generic types are not covariant. Meaning, you cannot substitute a generic type with a specific type argument, with another generic type that uses a type argument that is the base type for the first type argument.