Is there a constraint that restricts my generic method to numeric types?

Question

Can anyone tell me if there is a way with generics to limit a generic type argument T to only:

• Int16
• Int32

Answer 1

Topic is old but for future readers:

This feature is tightly related to Discriminated Unions which is not implemented in C# so far. I found its issue here:

https://github.com/dotnet/csharplang/issues/113

This issue is still open and feature has been planned for C# 10

So still we have to wait a bit more, but after releasing you can do it this way:

static bool IntegerFunction(T value) where T : Int16 | Int32 | Int64 | ...