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Re: on the order of the const-keyword

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On 28/10/2021 21:18, Thiago Adams wrote:
> On Thursday, October 28, 2021 at 4:56:18 PM UTC-3, Thiago Adams wrote:
> ...
>>> 'const' (as well as short, int, long, float, double, even static and
>>> typedef) can occur anywhere, in any combination, in the declaration of a
>>> base type (what goes on the left before the first variable).
> 
> I also have a new definition for typedef considering how it works.
> 
> We use to say typedef is a alias for a type name.
> 
> But here ,
> 
> typedef int Int;
> typedef unsigned Int T; //error
> 
> Int does not work as a alias for int.

I think this is reasonable behavour. To make it work as you want, as an 
alias for the 'int' /token/, then it can be done as:

   #define Int int

For a composite type like 'int long long', it must be a valid 
combination of those tokens. The alias 'T' may be defined internally as 
a complete type 'signed long long int'.

You can't then modify it as 'unsigned signed long long int' even if you 
could sort out the parsing.

For example, you can't do 'unsigned int32_t'.

> 
> So my definition  is:
> when we put typedef in a declaration we declare a variable that has no
> storage.

I can never remember how typedef works, and have to pretend that it is 
'static', and I'm declaring a normal variable name.


> When we use this variable is the same of using typeof(variable) but
> we write just the variable name.
> Int x;
> So typedef is more like "use the same type of that variable here".
> 
> considering this.... I was also considering to use typedef to define constants
> 
> typedef double pi = 3.14;
> or
> valuedef double pi = 3.14;
> 
> pi is a non-storage variable, but instead of copying its type
> we copy its initialization value.

I tried something like that. I couldn't use 'const' as that was taken; I 
used 'constant':

	constant int a = 1233;
	constant double b = a/10.0;

	printf("%d\n", a);
	printf("%f\n", b);

This could be tweaked to infer the type from the expression.

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on the order of the const-keyword Meredith Montgomery <mmontgomery@levado.to> - 2021-10-28 12:50 -0300
  Re: on the order of the const-keyword Bart <bc@freeuk.com> - 2021-10-28 17:25 +0100
    Re: on the order of the const-keyword "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2021-10-28 10:10 -0700
      Re: on the order of the const-keyword Guillaume <message@bottle.org> - 2021-10-28 20:40 +0200
      Re: on the order of the const-keyword Meredith Montgomery <mmontgomery@levado.to> - 2021-10-29 00:07 -0300
        Re: on the order of the const-keyword James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-10-29 00:48 -0400
    Re: on the order of the const-keyword Thiago Adams <thiago.adams@gmail.com> - 2021-10-28 12:56 -0700
      Re: on the order of the const-keyword Thiago Adams <thiago.adams@gmail.com> - 2021-10-28 13:18 -0700
        Re: on the order of the const-keyword Bart <bc@freeuk.com> - 2021-10-28 21:35 +0100
          Re: on the order of the const-keyword Thiago Adams <thiago.adams@gmail.com> - 2021-10-28 13:57 -0700
            Re: on the order of the const-keyword Thiago Adams <thiago.adams@gmail.com> - 2021-10-28 14:07 -0700
              Re: on the order of the const-keyword Bart <bc@freeuk.com> - 2021-10-28 22:54 +0100
              Re: on the order of the const-keyword Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-10-28 15:37 -0700
                Re: on the order of the const-keyword Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-10-29 00:02 +0100
        Re: on the order of the const-keyword Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-10-28 22:10 +0100
        Re: on the order of the const-keyword Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-10-28 15:13 -0700
        Re: on the order of the const-keyword Meredith Montgomery <mmontgomery@levado.to> - 2021-10-29 00:40 -0300
    Re: on the order of the const-keyword Meredith Montgomery <mmontgomery@levado.to> - 2021-10-28 23:48 -0300
  Re: on the order of the const-keyword James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-10-28 13:04 -0400
    Re: on the order of the const-keyword Meredith Montgomery <mmontgomery@levado.to> - 2021-10-29 00:34 -0300
  Re: on the order of the const-keyword David Brown <david.brown@hesbynett.no> - 2021-10-29 10:03 +0200
    Re: on the order of the const-keyword Bart <bc@freeuk.com> - 2021-10-29 11:30 +0100
      Re: on the order of the const-keyword David Brown <david.brown@hesbynett.no> - 2021-10-29 16:31 +0200
        Re: on the order of the const-keyword Bart <bc@freeuk.com> - 2021-10-29 16:45 +0100
          Re: on the order of the const-keyword David Brown <david.brown@hesbynett.no> - 2021-10-29 18:30 +0200
            Re: on the order of the const-keyword Manfred <noname@add.invalid> - 2021-10-30 00:32 +0200
              Re: on the order of the const-keyword Meredith Montgomery <mmontgomery@levado.to> - 2021-10-29 20:03 -0300
              Re: on the order of the const-keyword Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-10-30 01:10 +0100
            Re: on the order of the const-keyword Bart <bc@freeuk.com> - 2021-10-29 23:51 +0100
    Re: on the order of the const-keyword Meredith Montgomery <mmontgomery@levado.to> - 2021-10-29 12:22 -0300
      Re: on the order of the const-keyword David Brown <david.brown@hesbynett.no> - 2021-10-29 18:34 +0200
        Re: on the order of the const-keyword Meredith Montgomery <mmontgomery@levado.to> - 2021-10-29 17:04 -0300

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