Re: C++ preferences (was: RFC: lalr1.cc: support move semantics)

[Akim Demaille]

Hi!

> Le 12 sept. 2018 à 23:45, Frank Heckenbach <address@hidden> a écrit :
> 
> Hi Akim!
> 
>> So my favorite style is definitely
>> 
>> const auto x = T{v};
>> 
>> and I wish I could get rid of auto:
>> 
>> const x = T{v};
> 
> I do admit I usually don't declare my local variables const though
> they often should be

I recently had to work on some piece of software with coroutines,
and known what variables are immutable was really reassuring.
In my code I usually try to having the smallest possible scopes
for variables, more for readability than quick destruction, and
I now spread `const` for similar reason: help the reader.

> (because I also dislike overly long declarators
> that look like Java-style boilerplate, a la
> "public static final virtual override const volatile foo ()" ;).

Nice baby :)

> But if there was a more concise syntax, I'd like it. I had
> fantasized about a new keyword ("let") or a new syntax (":="),

Yep, I was impressed by Swift, there are many beautiful things
in this language.  I really like their `let`.

> but
> if "const" with implied "auto" can simply work, that would be great.
> But we’re not designing C++ here, I know ...

I recently changed works, and have to deal with JavaScript.
They have const!  But they also have let, and it means something
different…

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const