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How to convert a String into an ArrayList?

... Why doesn't this work List<Character> word1 = new ArrayList<Character>(Arrays.asList(A[0].toCharArray())); I'm trying to get first String of an string array, and convert that string into charArray and that charArray to List<Character> ...
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c++提取复数的实部和虚部 - C/C++ - 清泛网 - 专注C/C++及内核技术

...// 实部 REAL i; // 虚部 }; bool Parse(COMPLEX * cp, const char * strCplx, const int len) { memset(cp, 0, sizeof(COMPLEX)); char buf[MAX_BUF_LEN]; int signPos = -1, // +/-号位置 iPos = -1; // 结尾的i的位置 for (int i = len-1; i >-1;...
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C++11 tuple 这一篇就够了 - C/C++ - 清泛网 - 专注C/C++及内核技术

... #include <iostream> #include <tuple> int main () { int myint; char mychar; float myfloat; std::tuple<int,float,char> mytuple; mytuple = std::make_tuple (10, 2.6, 'a'); // packing values into tuple //std::tie (myint, std::ignore, mychar) = mytuple; // unpacking...
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libcurl网络连接使用tcp/ip - C/C++ - 清泛网 - 专注C/C++及内核技术

...络连接使用tcp ip,部分代码如下:CURL *curl;CURLcode res;const char *request = "GETas.xxxxE测试发送"; curl_socket_t sockfd; * socket * ...部分代码如下: CURL *curl; CURLcode res; const char *request = "GETas.xxxxE测试发送"; curl_socket_t sockfd; /* socket */ l...
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c++ 写日志通用类,可设置日志级别 - C/C++ - 清泛网 - 专注C/C++及内核技术

... Log(int nLevel, LPCSTR func, INT line, LPCTSTR fmt, ...); static const char * const LOGGER_LEVEL_NAME[] = {"崩溃", "错误", "警告", "信息", "详细", "调试"}; static const char * const LOGGER_LEVEL_CODE[] = {"FATAL", "ERROR", "WARN ", "INFO ", "VERBOSE", "DEBUG"}; #define logging(nL...
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atol 头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术

...数名:atol功能: 把字符串转换成长整型数用法: longatol(const char *nptr);程序例:#include <stdlib.h> #includ...#include <stdlib.h> 函数名: atol 功 能: 把字符串转换成长整型数 用 法: long atol(const char *nptr); 实例: #include <stdlib.h> #include <s...
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C++ 通过主机名/域名获取IP - C/C++ - 清泛网 - 专注C/C++及内核技术

...中用到Winsock API 函数,都要用到 Ws2_32.lib void GetHostIP(char *szIPAddr) { WSADATA wsaData; char name[155]; //定义用于存放获得主机名的变量 char *ip; //定义IP地址变量 PHOSTENT hostinfo; //调用MAKEWORD()获得Winsocl版本的正确值...
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std::stringstream ss; 直接使用ss.str().c_str() 字符串指针可能导致崩溃 ...

....str().c_str() 字符串指针可能导致崩溃std::stringstream ss;const char* ch = ss str() c_str();call_func(ch);这种写法在系统内存不足时,ss会立马释放内存,字符串指针ch可能会非法访问导致崩溃。代码最好的是 std::stringstream ss; const char* ch = ss...
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boost库编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...ee::xml_writer_settings<std::string> settings(' t', 1, "GB2312");报错:char不能转换为std::string。1.5...boost::property_tree::xml_writer_settings<std::string> settings('\t', 1, "GB2312"); 报错:char不能转换为std::string。 1.54 版本 报错,改为boost::property_tree::xml_wr...
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VC/Linux C++ 递归访问目录下所有文件 - c++1y / stl - 清泛IT社区,为创新赋能!

VC函数,部分代码如下:find(char * lpPath) { &nbsp; &nbsp; char szFind[MAX_PATH]; &nbsp; &nbsp; WIN32_FIND_DATA FindFileData; &nbsp; &nbsp; strcpy(szFind,lpPath); &nbsp; &nbsp; strcat(szFind,&quot;\\*.*&quot;); &nbsp; &nbsp; HANDLE hFind=::FindFirstFile(szFind,&amp;FindFileData); &nbsp; &...