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Bookmark or Share- How do I make the method return type generic? - Stack Overflowpublic
void addFriend(String name, Class type, T animal); public T callFriend(String name, Class type); Inside both methods you should check that the parameters are sane. See Effective Java and the Class javadoc for more info. edited May 17, 2016 at 16:22. - How can I return NULL from a generic method in C#?Three options: Return default (or default(T) for older versions of C#) which means you'll return null if T is a reference type (or a nullable value type), 0 for int, '\0' for char, etc. (Default values table (C# Reference)) If you're happy to restrict T to be a reference type with the where T : class constraint and then return null as normal.
- Nullable type as a generic parameter possible? - Stack OverflowMultiple generic constraints can't be combined in an OR fashion (less restrictive), only in an AND fashion (more restrictive). Meaning that one method can't handle both scenarios. The generic constraints also cannot be used to make a unique signature for the method, so you'd have to use 2 separate method names.
- Java generics: multiple generic parameters? - Stack OverflowThese are therefore different to and independent of any generic types associated with the class or interface which contains the function. public class MyClass
{ public void foo(Sets, Sett); //same type params as on class public void bar(Set s, Set t); //type params independent of class } - C# Generics and Type Checking - Stack OverflowIn case you happen to have a generic method that returns a generic value but doesn't have generic parameters, you can use default(T) + (T)(object) cast, together with C# 8 pattern matching/type checks (as indicated in the other recent answers). Example: private static T Parse
(string str) {. return default(T) switch. 
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