I think of “T” as the template parameter the same way I think of “i” as a loop iterator. It’s a conventional shorthand, so if it’s contextually clear, like if T

I think of “T” as the template parameter the same way I think of “i” as a loop iterator. It’s a conventional shorthand, so if it’s contextually clear, like if T is the only template parameter and there aren’t complex constraints on how T behaves, there isn’t much harm in using it for succinctness.