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Lecture 04—Template Patterns I Chase Geigle Announcements Template Specialization Partial Template Specialization Template Template Parameters Next Time Template Specialization Definition (Template Specialization) Template Specialization is a mechanism by which the behavior of a template class or function is completely replaced with something else, based on a condition on one or more template parameters. A “gotcha”: when specializing, you replace the entire function/class When we specialize vector, we’ll have to write the entire class again. Lesson: attempt to specialize as little as possible—if only one or two functions are going to change in your specialization, just specialize those functions as opposed to the class itself
Lecture 04—Template Patterns I Chase Geigle Announcements Template Specialization Partial Template Specialization Template Template Parameters Next Time Example #include #include template class vector { public: bool operator[]( size_t i ) { size_t idx = i / 8; // I hope this is correct... return ( data_[ idx ] >> ( 7 - ( i % 8 ) ) ) & 1; } // other things private: uint8_t * data_; };
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