// The ## is unnecessary and does not result in a single preprocessing token.#defineADD_STD(x) std::##x// Declare a std::stringADD_STD(string) s; 可变参数宏中的逗号省略 传统的 MSVC 预处理器始终会移除空__VA_ARGS__替换内容前的逗号
在这种时候,如果用到 QString和char*互转,可用如下方法: 1QString str ="324rwer中文";23char* pCh =newchar[50];4memset(pCh,0,50);5//QString转char*6std::stringstdStr =str.toStdString();7memcpy(pCh, stdStr.c_str(), stdStr.length());89//char* 转 QString10QString strCh(pCh);11Q...
} FUNC_EXIT_RC(error); return error; } staticstruct { int code; char* string; } X509_mess...
osg::Node * node = new osg::Node; node = osgDB::readNodeFile(osgPath.toStdString()); // 读取模型文件,赋值给节点指针 viewer.setSceneData(node); // 查看器中添加该节点 return viewer.run(); // 运行查看器 } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. ...
Xmake 版本 2.8.9 操作系统版本和架构 windows10 描述问题 为了实现软件版本信息更新时,在多个操作系统下编译文件的版本信息同步更新,我将版本号定义到头文件中 windows下编译时在rc文件中引用 APP_VERSION_STRING 宏定义 编译之后打印软件的版本信息,同时通过windows的
#include<iostream>#include<QString>intmain(){QString*str=newQString("Hello, ASan!");std::cout<<str->toStdString()<<std::endl;// 删除str指针,但没有将其置为空deletestr;// 访问已释放的内存std::cout<<str->toStdString()<<std::endl;return0;} ...
#include<string_view>boolcompare(conststd::string_view& l,conststd::string_view& r){returnl == r; } Required Compiler Flags:/O2 X64 ASM: ARM64 ASM: Vector Logical and Arithmetic Optimizations We continue to add patterns for recognizing vector operations that are equivalent to intrinsics or...
implied by /permissive-)strictStrings[-] disable string-literal to [char|wchar_t]*conversion...
qDebug() << "Failed to parse person.pb."; } qDebug() << "ID: " << person.id(); qDebug() << "name: " << QString::fromStdString(person.name()); if (person.has_email()) { qDebug() << "e-mail: " << QString::fromStdString(person....
// Declare a std::stringADD_STD(string) s; Behavior 4 [comma elision in variadic macros] Consider the following example: voidfunc(int,int= 2,int= 3);// This macro replacement list has a comma followed by __VA_ARGS__#defineFUNC(a, …) func(a, __VA_ARGS__)intmain(){// The ...