Ok, solved it, I just use pointer casts and it seems to work when
the struct is sliced.
On Monday, 14 July 2014 at 13:23:57 UTC, ponce wrote:
Hi,
I am porting C++ code that undo "Object Slicing" by casting
const-references:
http://en.wikipedia.org/wiki/Object_slicing
My translation in D Code
----
struct A
{
// stuff
}
struct B
{
A a;
alias a this;
// stuff
}
void myFunction(ref const(A) a)
{
if (<a-is-actually-a-B>)
{
// here goes the converstion to a B reference
myFunction2(*cast(const(B)*)(&a)); // using pointer to
do type-punning
}
}
----
To do this, I need to by guaranteed an object passed through
ref const(A) is never, ever passed by value. Is it safe to
assume?
