如何获取类名? [英] How to get class name?
本文介绍了如何获取类名?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如果我定义了一个类:
class Blah {};
我如何:
std::string const className = /* What do I need to do here? */;
assert( className == "Blah" );
我不认为typeid()。name()是一个好主意,因为它编译器实现。有没有什么提供的C ++标准或Boost?
I dont think typeid().name() is a good idea since it's compiler implementation specific. Is there anything provided by the C++ standard or Boost?
注意:如果类继承自Qt的QObject,我可以很容易地使用 QMetaObject ::
Note: If the class were inherited from Qt's QObject, I could easily use QMetaObject::className()
to get the class name.
推荐答案
像这样:
class Blah { static std::string const className() { return "Blah"; }};
std::string const name = Blah::className();
assert(name == "Blah");
或:
class Blah {};
template < typename T > struct name;
template < > struct name<Blah> { static std::string value() { return "Blah"; }};
std::string const classname = name<Blah>::value();
assert(classname == "Blah");
荣誉:
#define DECLARE_NAMED_CLASS( Name ) \
struct Name;\
template < > struct name<Name> { static std::string value() { return #Name; }};\
struct Name
DECLARE_NAMED_CLASS(Blah) {};
std::string const className = name<Blah>::value();
...
或:
class Blah : QObject { Q_OBJECT };
或者:...
或者:...
Or this:... Or this: ...
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