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...
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...
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...
typename T2=void, typename T3=void> class meta_container { public: typedef T0 type; typedef meta_container<T1, T2, T3, void> next_node; // 参数移位了 static const int size = next_node::size + 1; // 非 null_type 模板参数个数 }; template<> // 特例,递归终止 class meta_container<...
template class vector: public _Bvector_base { public: typedef bool value_type; .../usr/include/c++/3.3.2/bits/std vector.h /usr/include/c++/3.3.2/bits/std bvector.hC++ Template Meta ProgrammingIntroductionTemplate Metaprogram- ming A Bad Example A Good Example ConclusionsWhat Is ...
{ winrt::weak_ref<Me> m_weakSelf; }; // msvc 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' ...
We propose a new extension to the purely functional programming language Haskell that supports compile-time meta-programming. The purpose of the system is to support the algorithmic construction of programs at compile-time. The ability to generate code at compile time allows the programmer to ...
Integer packs (and integer pack utilities) for template meta-programming 4 Math Vector Header Library Templated on Data Type and Size 4 Replace part of the string with n size with string of m size 3 JSON Data-structure in C++ and querying it 3 Constexpr circular queue - follow-up ...
Therefore, MetaC++ functions can take types as arguments and return types. Those are the ones that are most useful in real-life C++ programming. Here s an example that is simple but important and useful nonetheless. It is a MetaC++ function that solves the reference-to-reference problem, ...
机译:为C ++模板元程序实现monad 2. C++ lambda expressions and closures [J] . Jaakko Jaervi, John Freeman Science of Computer Programming . 2010,第9期 机译:C ++ Lambda表达式和闭包 3. Interval arithmetic using expression templates, template meta programming and the upcoming C++ standard [...