Re: Why Python When There Is Perl?

Lawrence D'Oliveiro wrote this copyrighted missive and expects royalties:

On Tue, 9 Apr 2024 08:46:03 -0400, Chris Ahlstrom wrote:
>

Lawrence D'Oliveiro wrote this copyrighted missive and expects
royalties:
 

On Sat, 6 Apr 2024 07:59:04 -0400, Chris Ahlstrom wrote:
>

Lawrence D'Oliveiro wrote this copyrighted missive and expects
royalties:
 

Until you realized it would never work, because classes are not
objects in C++.

 
:-D     WTF you talkin', Willis? Ye nae true Scotman fallacy?

>
You tell me: does C++ accept “true Scotsmen” among its users/features,
or not?

 
C++ provides many forms of programming, including object-oriented
programming.

>
But no metaclasses, like Python does.
>
I came up with an interesting use for them, to allow convenient definition
of a hierarchy of exception classes representing return codes from a given
API. More details in the “Uses For Metaclasses” notebook in this
collection <https://gitlab.com/ldo/python_topics_notebooks/>.

Interesting. It is not clear to me why you need metaclasses to implement the
example, though.

On another note, C++20 introduces the concept of "concepts", which put
constraints on templates and their parameters. The constraints are based on
concepts like you'd find at cppreference.com:

    std::map meets the requirements of Container, AllocatorAwareContainer,
    AssociativeContainer and ReversibleContainer.

The full list is here:

    https://en.cppreference.com/w/cpp/concepts

Well, not the full list:

    Additional concepts can be found in the iterators library, the algorithms
    library, and the ranges library.

These programming languages arms races are fun!

--
Time to be aggressive.  Go after a tattooed Virgo.