#include<iostream>template<classT,classU=int>classA;template<classT=float,classU>classA;template<classT,classU>classA{public:Tx;Uy;};A<>a; 注意:和Function default一样,template default也支持 typename = void,这个dummy type是个占位符,平时不会用到,但在SFINAE里会用到。 Variadic Template(Packin...
Meta-programming can be applied in other fields too, such as static data structure [16] algorithms [3], design patterns [10] [13], reflection [15], expression template [2][5] etc. One more reason is because in C++ the host language and domain language are both the same, therefore, ...
c++ templates template-specialization template-meta-programming Raj*_*esh lucky-day 0推荐指数 1解决办法 188查看次数 模板元编程为此? struct findCategoryByName { string name; bool operator()(const category& a) { return (a.name == name); } }; struct findEntryByName { string name; bool ope...
template的一个重要使用方法就是template meta programming,它利用编译器对于template的解释是静态的这一特性,让编译器在编译时做计算,可以有效的提高程序的运行速度。有关于 template meta programming的记载,最早见于Erwin Unruh,他在1994年写了一个用template计算质数的程序。我希望通过这篇文章介绍一些TMP的基本技巧和应...
简要地解释元编程(Meta Programming),元编程类似一个解释器,比如C/C++都是生成了汇编最终生成机器码让计算机运行的。 而模板元编程(TMP)是在C++的体系内,模板实例化后会变成新的代码,但这份新的代码仍然是C++代码,模板的优点就像它的名字一样,套个不同的参数能够刻画出一组组功能相似类型又不同的类或函数。比如...
type_traits(1173,28): error C2139: 'Me': an undefined class is not allowed as an argument to compiler intrinsic type trait '__is_base_of' test.h(16,8): message : see declaration of 'Me' base.h(1963,45): message : see reference to variable template 'const bool is_base_of_v<wi...
In this paper we discuss a DSL integration technique for the C++ programming language. The solution is based on compile-time parsing of the DSL code using the C++ template metaprogramming library called Metaparse. The parser generator is the C++ template metaprogram reimplementation of a runtime ...
As you will soon see, each meta-operator (like Add, Return, etc.) has a field called id. We can use this field to find out what kind of base-type the template has. In this context, a base-type has nothing to do with inheritance and polymorphism. I'm not sure if this is ...
wikibooks.org(C++ Programming/Templates/Template Meta-Programming,More C++ Idioms);THE BOOST MPL LIBRARY online docs(到网站);Best introduction to C++ template metaprogramming?(stackoverflow问答)。注:参考文献中所给的链接,打开不了的,可以参见我的另一篇博客配置浏览器...
Here is an example of how to use template meta programming for compile time computations. The example shows how to implement primality checking in compile time, but the same principle can be applied to other problems. For instance, in the main function, replacing Generate <level, Prime>::value...