Re: First Ada DO-178 Certification

On Thu, 17 Oct 2024 00:36:26 +0200, Nioclásán Caileán de Ghlostéir wrote:

This book is dated 1987.
...
I do not readily remember metaclasses in it.

In 1987, I think the only language that used the term “metaclass” was
Smalltalk, and that was just as a hack mechanism on which to hang what we
now call “classmethods”.

Python has metaclasses in a much more useful sense: being fully OO, every
value that a variable can hold is an object. Since functions and classes
are first-class objects, they, too, must be instances of some class(es).
The class that a class is an instance of is called its “metaclass”.