Roslyn: Generic types should support operators

[ygc369]

Generic constraints should be more exact, thus we would be able to use operators on generic types.
for example:
public static T Function1(T a,T b) where T:int,long,uint,ulong
{return a/b+a%b;}

[HaloFour]

C# is limited by the support for generic constraints offered by the CLR which only really supports class, struct, new(), a subclass and/or a list of interfaces.

Supporting operators would be tricky because operators are both applied to the built-in primitive types, such as the ones you listed, as well as through static methods on any custom type. The IL generated for + could not be the same for System.Int32 v. System.Decimal, but it would have to be.

I want to say that this request is duped (probably multiple times) but I'm having trouble finding an issue number. Perhaps it's still over on CodePlex.

[gafter]

We are now taking language feature discussion on https://github.com/dotnet/csharplang for C# specific issues, https://github.com/dotnet/vblang for VB-specific features, and https://github.com/dotnet/csharplang for features that affect both languages.

The use case for this would be addressed by concepts: https://github.com/dotnet/csharplang/issues/110