On Tuesday, 23 July 2013 at 20:13:33 UTC, John Colvin wrote:
On Tuesday, 23 July 2013 at 17:06:37 UTC, Dicebot wrote:
On Tuesday, 23 July 2013 at 17:03:52 UTC, John Colvin wrote:
Sorry, I should have been more clear. It's the first case
that seems weird to me.
Why? '*aptr' is 'a' pretty much by definition of pointer
dereferencing.
To be honest, I wasn't expecting foo(*aptr) to compile at all,
with a "taking address of temporary" error or similar.
It's clearly the right behaviour to allow it, but it took me by
surprise at first.
"Pass-by-Ref" is pretty much sugar for "pass-pointer-by-value".
Basically, if you can take the address of the argument, then
passing it is fair game. It's because you can't take the address
of a temporary that you can't pass a temporary by ref (unless you
are Microsoft Visual Studio, then there's no problem at all
apparently 0_o).
Of course, "*aptr" does not return a temporary, so passing that
is fair game too.
