Sorry - the question is not immediatly understandable. If you mean how 'var t *Tabby = nil' is different from the interface representation: For this one no type

Sorry - the question is not immediatly understandable. If you mean how 'var t *Tabby = nil' is different from the interface representation: For this one no type information is stored at runtime. It's only a single pointer. Whereas an interface at runtime is always represented by 2 fields, a pointer and a type field.