On Saturday, 31 May 2014 at 22:34:45 UTC, Timon Gehr wrote:
On 06/01/2014 12:25 AM, Ali Çehreli wrote:
dec10 little = cast(dec10(bingo));
You meant cast(dec10)(bingo).
assert(little == dec10("123.45"));
Is this expected behavior?
Paul
That is surprising. I've discovered that if the template has
members
that depend on a template parameter than the code fails to
compile. I
think it should fail to compile in other cases as well because
a
separate instantiation of a template is a separate type
potentially with
completely different invariants.
This behaviour is independent of templates. Struct values of
the same size can be reinterpret-cast to each other this way
even if their types are completely unrelated.
struct A{
int a,b;
}
struct B{
long x;
}
void main(){
auto a=A();
auto b=cast(B)a;
}
So, although this works it is undocumented and will probably be
modified at some point. I won't use it and I'll file a bug report
if I can't find one that covers it already. Thanks for your help.
