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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.lang.c
Subject: Re: Recursion, Yo
Date: Wed, 10 Apr 2024 07:52:13 -0000 (UTC)
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On Wed, 10 Apr 2024 09:11:49 +0200, David Brown wrote:

> It is not much used in practice, AFAIK.  For some cases the code
> generation for nested functions was fine and straight-forward.  In other
> cases, however, it required a trampoline generated on the stack, and
> that became a real pain once non-executable stacks came into fashion.

That would be true of those other languages that require the feature, too.

> Nested functions were never as interesting for C++ as you already have
> better mechanisms for controlling scope and data access - classes and
> their methods, including nested classes.

Python does both. Just because you have classes doesn’t mean functions 
can’t be first-class objects, too.