ia

方法1 1 int[] ia = {1,2,3}; 2 int id = Array.IndexOf(ia,1); // 这里的1就是你要查找的值 1 string[] strArr = {"a","b","c","d","e"}; 2 bool exists = ((IList)strArr).Contains("a"); 参考网址 　　[1] https://www.cnblogs.com/superelement/p/7691229.html 来源：博客园 作者： lyj00436 链接：https://www.cnblogs.com/luyj00436/p/11653343.html

先看一个一维数组的简洁遍历方式： int a [ 6 ] ={ 8 , 2 , 1 , 3 , 4 , 5 }; for ( auto & e : a ) cout << e << " " ; 再看二维数组的遍历常用方式： int ia [ 3 ] [ 4 ] = { 0 ， 1 ， 2 ， 3 ， 4 ， 5 ， 6 ， 7 ， 8 ， 9 ， 10 ， 11 } ; //1 for ( auto & row : ia ) { for ( auto & col : row ) { cout << col << endl ; } } //2 constexpr size_t rowCnt = 3 , colCnt = 4 ; for ( size_t i = 0 ; i != rowCnt ; ++ i ) { for ( size_t j = 0 ; j != colCnt ; ++ j ) { cout << ia [ i ] [ j ] << endl ; } } //3 for ( int ( * p ) [ 4 ] = ia ; p != ia + 3 ; p ++ ) { for ( int * q = * p ; q != * p + 4 ; q ++ ) { cout << * q << endl ; } } //4 （与3基本相同） for ( int ( * p

对于向量A [B, iA] = sort(A); 则B = A(iA) [C,iB] =sort(iA); 则A = B(iB) 来源： https://www.cnblogs.com/virter/p/11598391.html

linux下是这样定义的： 在linux的实现中pthread_t被定义为 "unsigned long int",参考http://condor.depaul.edu/glancast/443class/docs/pthreads.html Windows下这样定义： 1 /* 2 * Generic handle type - intended to extend uniqueness beyond 3 * that available with a simple pointer. It should scale for either 4 * IA-32 or IA-64. 5 */ 6 typedef struct { 7 void * p; /* Pointer to actual object */ 8 unsigned int x; /* Extra information - reuse count etc */ 9 } ptw32_handle_t; 10 typedef ptw32_handle_t pthread_t; 转载于:https://www.cnblogs.com/sky-of-chuanqingchen/p/4123413.html 来源： https://blog.csdn.net/weixin_30378311/article/details

Archive An archive is a sequence of bytes that represented serialized C++ objects. Objects can be added to an archive to serialize them and then later loaded from the archive. 1. boost::archive::text_iarchive #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <iostream> #include <fstream> using namespace boost::archive; void save() { std::ofstream file("archive.txt"); text_oarchive oa{file}; int i = 1; oa << i; } void load() { std::ifstream file("archive.txt"); text_iarchive ia{file}; int i = 0; ia >> i; std::cout << i << std::endl; } int main() {