I see what you mean. You can create such new types with std.typecons.Typedef https://dlang.org/phobos/std_typecons.html#.Typedef https://dlang.org/phobos/std_t

I see what you mean. You can create such new types with std.typecons.Typedef https://dlang.org/phobos/std_typecons.html#.Typedef https://dlang.org/phobos/std_typecons.html#.Typedef Though it's less pretty.