On Tue, 14 Dec 2010 05:15:05 -0500
bearophile <[email protected]> wrote:
> > Magic constants have issues - be they strings, integrals, or doubles. I
> > have trouble thinking that complex literals are somehow exempt.
>
> I partially agree. They need to be used with care (and defined only once in
> the code). On the other hand removing all integral literals from my D
> programs isn't going to improve them :-)
What about (char &) string literals? Hello, World! in D:
void main () {
string message = [
0x48,
0x65,
0x6c,
0x6c,
0x6f,
0x2c,
0x20,
0x57,
0x6f,
0x72,
0x6c,
0x64,
0x21,
];
writeln(message);
}
And be happy that int's auto-cast to char's! Else, it would be:
void main () {
string message = [
cast(char)0x48,
cast(char)0x65,
cast(char)0x6c,
cast(char)0x6c,
cast(char)0x6f,
cast(char)0x2c,
cast(char)0x20,
cast(char)0x57,
cast(char)0x6f,
cast(char)0x72,
cast(char)0x6c,
cast(char)0x64,
cast(char)0x21,
];
writeln(message);
}
(works!)
(Should we put this version on Wikipedia's Hello, World! page
http://en.wikipedia.org/wiki/Hello_world_program_examples ?)
Denis
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