Tim M wrote:
On Wed, 11 Feb 2009 00:28:21 +1300, bobef <[email protected]> wrote:
I was thinking... what is the point of version() ? It is so
inflexible. There is no even version(!...). Why not "static
if(version(DMD))" or static if(is(version == DMD))?
Regards,
bobef
You could try something like this:
module Vers;
template vers(char[] V)
{
mixin("version(" ~ V ~ ")
{
const bool vers = true;
}
else
{
const bool vers = false;
}");
}
int main()
{
static if(vers!("X86_64"))
{
long a;
pragma(msg, "64 bit");
}
else
{
int a;
pragma(msg, "32 bit");
}
a = 2;
return a;
}
You beat me to it. I actually use this a little here and there. But
honestly, I find that the cases where I just want
'version(X){...}else{...}' far outweigh the cases where I want 'X && Y'
or the like. While it is technically a hack/workaround, I've been
perfectly happy with it.
Now, what would be nice, would be if version() could appear in places it
currently can't, following a few rules. In mid-statement, for example,
so long as its body is a complete expression. And then the same for
mixin expressions. Might be daydreaming too much, there.
Imagine though...
template vers (char[] V) {
const vers = mixin("version("~V~") {true} else {false}") ;
}
Add to that a deep shorthand syntax a la:
template vers (char[] V) = mixin("version("~V~") {true} else {false}") ;
Okay, I'll come down from the clouds now.
-- Chris Nicholson-Sauls
