#include <stdio.h>

template<typename T> struct is_reference
{
  enum { value = false };
};

template<typename T> struct is_reference<T&>
{
  enum { value = true };
};

int main()
{
  printf("%d\n", is_reference<int>::value);
  printf("%d\n", is_reference<void (int)>::value);
}


Compiled with DMC, the output is both times "1" (but I guess it should be
0). Medium-high priority (preferred boost::function syntax depends on it)


bye, Christof

-- 
http://cmeerw.org                                 JID: cmeerw@jabber.at mailto cmeerw at web.de

...and what have you contributed to the Net?

On Sun, 19 Jan 2003 12:52:50 +0000 (UTC), Christof Meerwald wrote:
> #include <stdio.h>
> 
> template<typename T> struct is_reference
> {
>   enum { value = false };
> };
> 
> template<typename T> struct is_reference<T&>
> {
>   enum { value = true };
> };
> 
> int main()
> {
>   printf("%d\n", is_reference<int>::value);
>   printf("%d\n", is_reference<void (int)>::value);
> }
> 
> Compiled with DMC, the output is both times "1" (but I guess it should be
> 0). Medium-high priority (preferred boost::function syntax depends on it)

With DMC 8.33.3 I now also get a "0" for

  printf("%d\n", is_reference<int &>::value);


bye, Christof

-- 
http://cmeerw.org                                 JID: cmeerw@jabber.at mailto cmeerw at web.de

...and what have you contributed to the Net?

Christof Meerwald <cmeerw@web.de> wrote in news:b0h1qp$15qs$1@digitaldaemon.com:

> On Sun, 19 Jan 2003 12:52:50 +0000 (UTC), Christof Meerwald wrote:
>> #include <stdio.h>
>> 
>> template<typename T> struct is_reference
>> {
>>   enum { value = false };
>> };
>> 
>> template<typename T> struct is_reference<T&>
>> {
>>   enum { value = true };
>> };
>> 
>> int main()
>> {
>>   printf("%d\n", is_reference<int>::value);
>>   printf("%d\n", is_reference<void (int)>::value);
>> }
>> 
>> Compiled with DMC, the output is both times "1" (but I guess it
>> should be 0). Medium-high priority (preferred boost::function syntax
>> depends on it)
> 
> With DMC 8.33.3 I now also get a "0" for
> 
>   printf("%d\n", is_reference<int &>::value);
> 
> 
> bye, Christof


Interesting,

the output of Borland's C++ builder 5 for the line "printf("%d\n", is_reference<int>::value);" is 0 (zero) but it won't compile the line "printf("%d\n", is_reference<void (int)>::value);".

I guess the second line is a typo, right?

With "printf("%d\n", is_reference<int &>::value);" Borland's compiler will output 1.

/gf