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[Mike James]

Georg Wrede Wrote:

> bearophile wrote:
> > 
> > void classify(char c) {
> >     write("You passed ");
> >     switch (c) {
> >        case '#':
> >           writeln("a hash sign.");
> >           break;
> >        case '0' ..> '9':
> >           writeln("a digit.");
> >           break;
> >        case 'A' ..> 'Z', 'a' ..> 'z':
> >           writeln("an ASCII character.");
> >           break;
> >        case '.', ',', ':', ';', '!', '?':
> >           writeln("a punctuation mark.");
> >           break;
> >        default:
> >           writeln("quite a character!");
> >           break;
> >     }
> > }
> (A bunch of other versions omitted.)...
> 
> 
>   void classify(char c) {
>       write("You passed ");
>       switch (c) {
>          case '#':
>             writeln("a hash sign.");
>             break;
>          case '0' .. case '9':
>             writeln("a digit.");
>             break;
>          case 'A' .. case 'Z':
>          case 'a' .. case 'z':
>             writeln("an ASCII character.");
>             break;
>          case '.', ',', ':', ';', '!', '?':
>             writeln("a punctuation mark.");
>             break;
>          default:
>             writeln("quite a character!");
>             break;
>       }
>   }
> 
> This is usable, easy to read -- and the programmer has no problem to 
> remember that .. works differently in case statements than in ranges.
> 
> There are other places in D that place an undue burden on the 
> programmer, but this is not IMHO one of them.
> 
> --------------------
> 
> My pet peeve with case is that, since we don't seem to be getting rid of 
> break (and use some word for fall-through instead, "which would save a 
> good deal of ink"), we should at least try to make break more 
> conspicuous. I can name a hundred times I've forgotten a break from 
> somewhere. So the canonical indentation should be like this:
> 
> 
>   void classify(char c) {
>       write("You passed ");
>       switch (c) {
>          case '#':
>             writeln("a hash sign.");
>          break;
>          case '0' .. case '9':
>             writeln("a digit.");
>          break;
>          case 'A' .. case 'Z':
>          case 'a' .. case 'z':
>             writeln("an ASCII character.");
>          break;
>          case '.', ',', ':', ';', '!', '?':
>             writeln("a punctuation mark.");
>          break;
>          default:
>             writeln("quite a character!");
>          break;
>       }
>   }
> 
> (It'd look better when the cases have more lines, but still.) Currently 
> in D, break is at least as important as case, therefore it deserves a 
> conspicuous place, hence my suggestion.


Full Circle...

http://www.digitalmars.com/webnews/newsgroups.php?art_group=digitalmars.D&article_id=81519