// argument vector napi_value argv[ARG_1] = { 0 }; napi_value thisVar = nullptr; void *data = nullptr; napi_status status = napi_get_cb_info(env, info, &argc, argv, &thisVar,&data); NAPI_ASSERT(env, status == napi_ok, "Bad parameters"); NAPI_ASSERT(env, argc == expectAr...
int max(int a,int b) int max(float a,float b) 类模板(泛型类) 为类定义一种模式。使得类中的某些数据成员、默写成员函数的參数、某些成员函数的返回值,能够取随意类型 常见的 容器比如 向量 vector 或vector 就是模板类 template<class E,class T> class Queue { public: T add(E e,T t){ return...
#include<cstdint>#include<iostream>intmain(){longlonga;int64_tb;std::cin >> a >> b;std::cout << std::max(a, b) << std::endl;return0;} int64_t在64位 Windows 下一般为long long int, 而在64位 Linux 下一般为long int, 所以这段代码在使用64位 Linux 下的 GCC 时不能通过编译,而...
#include <iostream>#include <vector>intmain(){// Create a vector containing integersstd::vector<int>v={8,4,5,9};// Add two more integers to vectorv.push_back(6);v.push_back(9);// Overwrite element at position 2v[2]=-1;// Print out the vectorfor(intn:v)std::cout<<n<<'...
(-10,10,LEN)defdot(A,B):ret=0foriinrange(len(A)):ret+=A[i]*B[i]returnretstart=time.time()res=dot(a,b)end=time.time()print(f"Result for python dot:{res}, time: {end-start}")start=time.time()res=vector.dot(a,b)end=time.time()print(f"Result for c++ dot:{res}, ...
vector<int>vec={0,3,4,6};cout<<vec.capacity()<<endl;// will print a number greater or equal to 4vec.reserve(10);// you can also force an expansion of the vectorcout<<vec.capacity()<<endl;// will print 10vec.shrink_to_fit();// since C++11, you can contract the vector to...
std::vector<int> v = {1, 2, 3, 4, 5}; // 使用范围for循环遍历向量并输出 for (const auto &elem : v) { std::cout << elem << " "; } std::cout << std::endl; return 0; } 输出结果为: 复制代码 1 2 3 4 5 除了向量,初始化列表还可以用于初始化其他类型,如结构体、联合体等...
} print; #if __cplusplus < 201100 # error "C++11 or better is required" #endif #include <algorithm> #include <cstdio> #include <cstring> #include <utility> #include <vector> #ifdef __has_include # if __has_include(<version>) # include <version> # endif #endif // Expect a strin...
//添加对象,可以再创建一个node添加或者直接{}node["nodeself"]=node; node["obj"]={ {"status","ok"}, {"vector",vector<string>()={"chenxuan","is","winner"}} };//C 类型数组constchar* oldStr[]={"asdf","nkjn"};autoarrOld=json.createArray(oldStr,2);//或者 Json::Node temp(old...
We can't move from a set 在集合间移动元素的标准做法是std::move: std::vector<std::unique_ptr<Base>> source; source.push_back(std::make_unique<Derived>()); std::vector<std::unique_ptr<Base>> destination; std::move(begin(source),end(source),std::back_inserter(destination)); 之...