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Question about 8.3/10 (function parameter pack)

 
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Alberto Ganesh Barbati
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PostPosted: Mon May 21, 2007 5:12 am    Post subject: Question about 8.3/10 (function parameter pack) Reply with quote


Hi,

in 8.3/10 of the latest draft (N2289) the example contains:

template<typename... T> void f(T (* ...T)(int, int);

int add(int, int);
float subtract(int, int);
void g() {
f(add, subtract);
}

what is the role of the third T in the first line?

template<typename... T> void f(T (* ...T)(int, int);
^
|
this one

If I understand the syntax correctly, after ... we should see the name
of the function parameter pack, so using T seems somehow wrong to me.

Am I missing something?

Ganesh

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Douglas Gregor
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PostPosted: Mon May 21, 2007 6:06 pm    Post subject: Re: Question about 8.3/10 (function parameter pack) Reply with quote


On May 20, 8:12 pm, AlbertoBarb...@libero.it (Alberto Ganesh Barbati)
wrote:
Quote:
in 8.3/10 of the latest draft (N2289) the example contains:

You mean 8.3.5/10 of N2284, I assume?

Quote:
template<typename... T> void f(T (* ...T)(int, int);

int add(int, int);
float subtract(int, int);
void g() {
f(add, subtract);
}

what is the role of the third T in the first line?

Ah, looks like a typo. That was a lower-case 't' in the original
document. I've reported this problem to the project editor.

Thanks!

- Doug

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