On Sunday, 19 July 2020 at 12:08:07 UTC, Paul Backus wrote:
On Saturday, 18 July 2020 at 18:46:16 UTC, Carl Sturtivant
wrote:
Here's a toy version of a problem in the wild.
struct S {
long first;
union T {
long one;
double two;
}
T second;
alias First = first;
alias Second = second.one;
}
void main() {
S x;
x.First = 4;
x.Second = 5; // compilation error: "Error: need this for
one of type long"
}
Easiest workaround:
ref inout(long) Second() inout { return second.one; }
Was trying to avoid this for performance reasons. In fact what
are the performance implications of this sort of thing with
current implementations? --- relative to using a simple offset.
