通过std::tuple_element获取元素类型。 template<typename Tuple> void Fun(Tuple& tp) { std::tuple_element<0,Tuple>::type first = std::get<0>(mytuple); std::tuple_element<1,Tuple>::type second = std::get<1>(mytuple); } 获取tuple中元素的个数: tuple t; int size = std::tuple_size...
Multiply... Who would have thought? @param a the first factor @param b the second factor @result The product */ int Multiply(int a, int b); 这种格式被称为 Javadoc。用双星号/**打开注释块是非常重要的。可以在 Doxygen 的 docblocks 描述中找到更多信息(请参阅进一步阅读部分中的链接)。 如前...
magic_get - std::tuple like methods for user defined types without any macro or boilerplate code. [Boost] meta - Header-only, non-intrusive and macro-free runtime reflection system in C++. [MIT] Nameof - Header-only C++17 library provides nameof macros and functions to obtain the simple ...
Rust还提供了 "类元组结构",这是有编号而非命名字段的结构体。 structMyTuple(pub u32,pub u8); 复制 字段的访问采用类似的点状语法:tuple.0, tuple.1,并采用类似函数调用的语法构造:MyTuple(1, 2)。除了语法之外,它们与普通结构体没有区别。类元组结构上的字段可以省略,以声明一个零字节的结构。 struct M...
First, <string> no longer includes <iterator>. Second, <tuple> now declares std::array without including all of <array>, which can break code through the following combination of code constructs: your code has a variable named "array", and you have a using-directive "using namespace std;...
// 声明1(加 inline,建议使用) inline int functionName(int first, int second,...); // 声明2(不加 inline) int functionName(int first, int second,...); // 定义 inline int functionName(int first, int second,...) {/***/}; // 类内定义,隐式内联 class A { int doA() { return...
First, <string> no longer includes <iterator>. Second, <tuple> now declares std::array without including all of <array>, which can break code through the following combination of code constructs: your code has a variable named "array", and you have a using-directive "using namespace std;...
First, <string> no longer includes <iterator>. Second, <tuple> now declares std::array without including all of <array>, which can break code through the following combination of code constructs: your code has a variable named "array", and you have a using-directive "using namespace std;...
def spam(): yield"first" yield"second" yield"third" for x in spam(): print(x) ---结果如下--- first second third 进行函数调用的时候,返回一个生成器对象。在使用next()调用的时候,遇到yield就返回,记录此时的函数调用位置,下次调用next()时,从断点处开始。 我们完全可以像使用迭代器一样使用 gen...
tuple<string,int,bool> mapfind_demo(map_str_int myMap,stringkey){ map_str_int::iterator pos; pos=myMap.find(key);if(pos ==myMap.end()){returnmake_tuple("",0,false); }else{returnmake_tuple(pos->first, pos->second,true); ...