Re: Class template member specialization

From:
"Bo Persson" <bop@gmb.dk>
Newsgroups:
comp.lang.c++.moderated
Date:
Tue, 27 Nov 2007 15:50:41 CST
Message-ID:
<5r3djjF11t92rU1@mid.individual.net> <cfe3cc04-448d-41ad-977e-aff349092a51@s8g2000prg.googlegroups.com>
anubhav.saxena@wipro.com wrote:
:: Hi,
::
:: While reading templates, I understood that it is possible to
:: specialize only the relevant member functions of the class
:: template, instead of the specializing the entire template. This is
:: beneficial when the code for most of the member functions is
:: similar.
::
:: Hence I tried the following sample code.
::
:: template<class T> class operations{ // generic arithmetic
:: operations public:
:: operations(){};
:: T add(T& t1, T& t2){return t1 + t2;}
:: T sub(T& t1, T& t2){return t1 - t2;}
:: };
::
:: // specializing the operations for char * type
:: template<> char *operations<char *>::add(char* t1, char* t2){
:: char *tmp = NULL;
:: // logic
:: return tmp;
:: }
:: template<> char *operations<char *>::sub(char* t1, char* t2){
:: char *tmp = NULL;
:: // logic
:: return tmp;
:: }

The operations are defined for T&, so specializations for char* would
have to take char*& parameters.

Something is not correct here. :-)

Bo Persson

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