Template classes and inheritance

[Joerg Loosen]

Hi there!

I recently found this code in a framework class:

class derived : base<derived> {
// ...
}

I. e. a class derived from a template class whose template parameter is
the derived class itself.

I remember vaguely having read something about this construct, but I
cannot recall where. Does this pattern have a name with which I could
try a web search? Or could somebody explain it to me?

Thanks,

Joerg

 

[Sharad Kala]

Hi there!

I recently found this code in a framework class:

class derived : base<derived> {
// ...
}

I. e. a class derived from a template class whose template parameter is
the derived class itself.

I remember vaguely having read something about this construct, but I
cannot recall where. Does this pattern have a name with which I could
try a web search? Or could somebody explain it to me?

Curiously Recurring Template Pattern (CRTP) (by Jim Coplien, AFAIK). Do a
search on this group and you will find many threads on CRTP.

Sharad