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Subject: Re: First Ada DO-178 Certification
Date: Wed, 16 Oct 2024 22:53:04 -0000 (UTC)
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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”.