emplate_match.cpp:29:15: error: ‘attributes_type’ is not a member of ‘std::thread’ std::thread::attributes_type attr;
时间: 2023-08-25 21:12:21 浏览: 51
`attributes_type` 是 `std::thread` 类的一个成员类型,但是在编译时提示错误 `‘attributes_type’ is not a member of ‘std::thread’`,这可能是因为您使用的编译器不支持 `std::thread` 的线程属性特性导致的。
如果您的编译器不支持 `std::thread` 的线程属性特性,可以尝试使用其他方法来设置线程堆栈大小,例如:
1. 使用操作系统提供的 API 来创建线程,并设置线程属性。
2. 在线程函数中动态分配堆栈空间,并在函数结束时手动释放。
这些方法虽然不如 `std::thread` 的线程属性特性方便,但可以实现类似的效果。
相关问题
emplate classes not supported by Q_OBJECT
As a language feature, template classes cannot inherit QObject, so they cannot use the Q_OBJECT macro. This is because the MOC (Meta-Object Compiler) cannot generate meta-object code for template classes at compile-time.
However, it is still possible to use templates in Qt. One approach is to create a non-template base class that inherits QObject and contains the Q_OBJECT macro. Then, derive the template class from the base class.
For example:
```
class MyBase : public QObject {
Q_OBJECT
public:
MyBase(QObject *parent = nullptr) : QObject(parent) {}
};
template<typename T>
class MyTemplate : public MyBase {
public:
MyTemplate(QObject *parent = nullptr) : MyBase(parent) {}
};
```
This way, any template class that derives from MyBase can use signals and slots, as well as other features provided by QObject.
Another approach is to use the Q_DECLARE_METATYPE macro to register the template class as a meta-type. This allows the template class to be used in signals and slots, but it does not provide the full functionality of QObject.
```
template<typename T>
class MyTemplate {
public:
// ...
};
Q_DECLARE_METATYPE(MyTemplate<int>);
```
In summary, while template classes cannot use the Q_OBJECT macro directly, there are workarounds to enable them to use signals and slots in the Qt framework.
emplate might not exist or might not be accessible by any of the configured Template Resolvers] with root cause
这个问题通常是由于找不到模板文件或者模板文件路径配置错误导致的。建议检查以下几个方面:
1. 确认模板文件是否存在,路径是否正确。
2. 检查模板文件所在的文件夹是否被正确地添加到模板解析器的配置中。
3. 如果是使用了多个模板解析器,则需要确认所使用的模板解析器是否正确配置。
如果以上都没有问题,可以尝试重启应用程序或者重新编译模板文件。如果问题仍然存在,可以提供更详细的错误信息以便更好地帮助你解决问题。
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