Can IService Collection inject all variants of generic types?

[zms9110750]

Similar to XmlSerializer(typeof(T)) and ArrayPool

[Joe4evr]

You can do services.Add{Lifetime}(typeof(ISomeService<>), typeof(Impl<>)) (or services.Add{Lifetime}(typeof(Impl<>))).

You can also register specializations in addition to the open service: services.Add{Lifetime}<ISomeService<Foo>, FooService>()

• Do note: I don't know if this is a bug or not, but it seems this only works if the specialization is registered after the open service

[zms9110750]

Can I specify the factory and key?
I want to do:

build.Services.AddSingleton(typeof(IMemoryOwner<>), sp => MemoryPool<>.Shared.Rent());
build.Services.AddKeyedSingleton(serviceType: typeof(XmlSerializer), serviceKey: { all }, (sp, key) => new XmlSerializer((Type)key));