int main() { std::vector<int> input_data = {1, 2, 3, 4, 5}; std::vector<std::future<int>> futures; for (int data : input_data) { auto preprocess_future = std::async(std::launch::async, preprocess, data); auto process_future = std::async(std::launch::async, process, pre...
#include <vector> #include <thread> std::vector<int*> vec; void func() { for (int i = 0; i < 10; ++i) { vec.push_back(new int[i]); } } int main() { std::thread t1(func); std::thread t2(func); t1.join(); t2.join(); // 错误地忘记释放内存 return 0; } 运行Lea...
摘要:1.前言 本文mark了vector的一些接口,介绍了vector中的对内存和对象的管理详解请见 "cppreference vector" 1.vector内部管理着一块内存,压入对象的时候,会使用这块内部的内存使用placement new去进行对象的生成,而释放对象的时候,显式的去调用析构函数 阅读全文 » web...
#include<vector> #include<iostream> #include<boost/algorithm/string.hpp> std::vector<std::string> v;// 此处填充 v std::cout << boost::algorithm::join(v,"") <<'\n'; Boost.Lexical_Cast Docs:http://boost.org/libs/lexical_cast Boost 前面已经介绍过。这是 Boost 的其中一个子库,提供了...
#include <iostream>#include <vector>#include <boost/algorithm/string/join.hpp>#include <boost/range/adaptor/transformed.hpp>using boost::adaptors::transformed;using boost::algorithm::join;int main(int argc, char *argv[]){ std::vector<int> vect_int(10); std::vector<double> vect_double(10...
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cipher block chaining (CBC):A method of encrypting multiple blocks of plaintext with a block cipher such that each ciphertext block is dependent on all previously processed plaintext blocks. In theCBCmode of operation, the first block of plaintext is XOR'd with an Initialization Vector (IV)...
ArrayList VS Vector 内部实现基本一致,略微差异不过是个人的一些写法问题; Vector是线程安全的,ArrayList是非线程安全的,在无线程安全需要的情况下,使用ArrayList; 注: 一般列表的操作,多数是在线程内操作,因此涉及多线程的场景不是很多; ArrayList 与 LinkedList 性能测试 ...
创建线程以后,可以调用join()或者detach()来等待线程结束,join()会等启动的线程运行结束以后再继续执行当前代码,detach()会直接往后继续执行当前代码,而不需要等待启动的线程运行结束。如果调用detach()分离线程,该线程结束后,线程资源会自动被系统回收。