On 4/17/16 11:57 PM, Tofu Ninja wrote:
On Monday, 18 April 2016 at 03:33:53 UTC, Adam D. Ruppe wrote:
The struct inside union is the main pure-language use case I know of
though.
Actually curiously I found another potential use, applying
attributes/UDAs to multiple members at once.
enum testUDA;
struct T{
@testUDA
immutable struct{
int x;
int y;
int z;
}
}
x,y,and z seem to all be immutable and all have the UDA testUDA. But
even odder, it seems that "struct" in there is doing absolutely nothing.
The same thing can be done with
enum testUDA;
struct T{
@testUDA
immutable{
int x;
int y;
int z;
}
}
So it still seems to be useless other than in the case of unions...
I wonder if it makes a difference for layout. So for example:
struct T
{
struct
{
int x;
ubyte y;
}
ubyte z;
}
If there is padding inserted between y and z.
-Steve
