Defining the Trais Class

Source: Internet
Author: User
Tags traits

1 //define two types first2 structa{};3 structb{};4 5 classFoo6 {7  Public:8     //bind type A to Foo9 typedef A ClassType;Ten  One     voidfoo () A     { -Std::cout << __function__ <<Std::endl; -     } the }; -  - classBar - { +  Public: -     //bind type B to bar + typedef B ClassType; A  at     voidBar () -     { -Std::cout << __function__ <<Std::endl; -     } - }; -  in //Optional, define a traits class for Foo bar -Template<typename t> to classtest_traits + { -  Public: the typedef typename T::classtype ClassType; * }; $ Panax Notoginseng //define a template function with Foo Bar as argument -Template<typename t> the voidfunc () + { A     //If you do not define the traits class, you can use T::classtype directly here theDo_func (T (), test_traits<t>:: ClassType ()); + } -  $ //the implementation of the Func function really type a class $Template<typename t> - voidDo_func (T &ins, a a) - { the (); - }Wuyi  the //implementation of the Func function really B type class -Template<typename t> Wu voidDo_func (T &ins, B a) - { About (); $ } -  - intMainvoid) - { AFunc<foo>(); +Func<bar>(); the}

Defining the Trais Class

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