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Re: Appending lists


From: Emanuel Berg
Subject: Re: Appending lists
Date: Thu, 17 Jun 2021 01:44:39 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Stefan Monnier via Users list for the GNU Emacs text editor wrote:

>> To put a point across it would be better to announce or
>> make a title that you don't talk how "variable never
>> changes", but you talk about the structures in memory and
>> somewhat interesting though practically within the spoken
>> context useless information. What matters for programmer is
>> that variable A instead of holding value 1 now has value 2,
>> that is a change, and how that change was internally
>> accomplished does not change the fact that A is now not 1
>> but is 2.
>
> That's the problem with mutation. In a language like Haskell
> where mutation is not allowed, when you have

Of course it isn't allowed in Haskell!

In Haskell, if your program does anything, that's not
encouraged and you should put that in a special part of the
code so that everyone can be aware of it and not get to
close :)

-- 
underground experts united
https://dataswamp.org/~incal




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