On Saturday, 8 April 2017 at 11:24:02 UTC, Nicholas Wilson wrote:
The ':' means that it applies to everything that follows it, so
while it doesn't matters in this example if you had
pragma( inline, true ):
int kroundup32( int x) { ... }
auto someVeryLargeFunction( Args args)
{
// ...
}
and then you used someVeryLargeFunction in a bunch of places
then that would cause a lot of binary bloat.
That's big difference! Thank you for pointing this out for me.
if you want the the function to affect the variable use a 'ref'
as in
void kroundup32(T)(ref T x) {
pragma(inline, true);
--(x);
(x)|=(x)>>1;
(x)|=(x)>>2;
(x)|=(x)>>4;
(x)|=(x)>>8;
(x)|=(x)>>16;
return ++(x);
}
int main(){
int num = 31;
writeln("Before: ",num); // 31
kroundup32(num);
writeln("After: ", num); //32
return 0;
}
is it a good idea? I would not think it is necessary.
As an aside the C version has parentheses around the "x"
because it is a macro and it is substituted as text not
symbolically, they are not needed in D.
This thing now is clear and settled while I try to navigate my
mind around many new things. Really appreciate your help, Nicolas.
