Re: Unique Integer Types -- a useful C++ trick

From: Asfand Yar Qazi (see_at_message.body.com)
Date: 11/20/04 

Date: Sat, 20 Nov 2004 19:16:26 +0000

>
> The trouble is you lose the constructor taking an unsigned int and the private
> constructor taking a bool. If you don't mind macros, you could do
>
> #define UNIQUE_INT(name) \
> struct name : unique_int<name> { \
> private: name(bool); \
> public: name(unsigned v = 0u) : unique_int<name>(v) { }\
> }; \
> /**/
>
> UNIQUE_INT(set_num_t)
> UNIQUE_INT(entry_num_t)
> UNIQUE_INT(lru_entry_t)
>

Macros are cool. It would have been great if Bjarne had improved the
preprocessor as well when he invented the C++ language... perhaps it
is still possible with the new C++ standard coming up? 

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