int max(int a, int b) { return a > b ? a : b; } template <typename T> T max(T a, T b, T c) { return max(max(a,b),c); //T为int时,并不会调用max<int> 而是调用非模板函数 } template <typename T> T max(T a, T b) { return a > b ? a : b; } max(1, 2, ...
不过它存在着很大问题,如果实例化 IntBubbleSortC<4>、 IntBubbleSortC<3>、 IntBubbleSortC<2>,将实例化成员函数 IntBubbleSortC<4>::IntSwap<0, 1>()、 IntBubbleSortC<4>::IntSwap<1, 2>()、 IntBubbleSortC<4>::IntSwap<2, 3>()、 IntBubbleSortC<3>::IntSwap<0, 1>()、 IntBubble...
(原創) Template Metaprogramming系列[1] : 使用遞迴/递归(Recursive) (C/C++) (.NET) (C++/CLI) (template) (TMP) Abstract 遞迴/递归(recursive)優點是代碼精簡,尤其若算法牽涉到前後相關,如n! = n * (n-1) * (n-2)...* 2 * 1,不用recursive很難寫,但recursive的缺點會大量消耗電腦內存,若使用...
A C variant is hosted here; I will complete it when this library is feature complete, it should be easier to make than this... Usage A metaprogram is built to generate files before the main program is built. We'll term runtime for this program as GEN_TIME. The metaprogram's core ...
Lisp has the most sophisticated and complete support for compile-time metaprogramming, through its system of macros. Unlike C macros that have limited expressive power and that operate based on textual substitution, Lisp macros are powered by the full extensibility of the language. ...
#include <iostream> #include <string> template <class A, class B, class C> struct tuple3{ // Empty constructor - necessary to store by value the tuple // in STL containers. tuple3(){} tuple3(const A& a, const B& b, const C& c) : a(a), b(b), c(c){ } A a; B b;...
Careful tuning of code is crucial to obtain near-optimal runtime performance on the hardware at hand. How-ever, current hardware platforms pose plenty of challenges: multiple levels of cache, many cores and increasingly wider vector units render manual tuning time-consuming and cumbersome. Thus, ...
The success of learning objects (LO) is limited by the ability to integrate them into coherent teaching courses in order to enable the educational goal-oriented creation of competency. LO sequences must be defined that are adapted to different types of learners, their personal needs and knowledge...
此示例显示了使用模板元编程计算功率的有效方法。 template <int base, unsigned int exponent> struct power { static const int halfvalue = power::value; static const int value = halfvalue * halfvalue * power::value; }; template <int base> struct power { static const int value = 1; static...
1def tell(person: String): Unit =macro MacrosImpls.tellMacro2classMacrosImpls(val c: Context) {3import c.universe._4def tellMacro(person: c.Tree): c.Tree ={5println("compiling tell ...")6val now =newDate().toString7q"""8println("Hello"+$person+", it is:"+$now)9"""10}11}...