我应该使用RTTI吗? [英] Should I use RTTI?
问题描述
嗯,我有一个问题,这比理论更具理论性。我需要知道RTTI的好处。
我看到另一种做法...
A级{
公开:
~virtual A(){}
enum输入{X,Y,Z};
类型GetType(){return type_; }
私人:
类型type_;
}
B类:公共A {...}
现在,如果我想知道它是什么类型的类,我只需要调用一个
GetType方法。
我对任何建议都很满意。谢谢。
Well I''ve got a problem, that is more theoretical than practital. I
need to know benefits of RTTI. I see another way of doing it...
class A {
public:
~virtual A() {}
enum Type { X, Y, Z };
Type GetType() { return type_; }
private:
Type type_;
}
class B : public A { ... }
and now if I want to know what type of class it is I just call a
GetType method.
I''d be really pleased with any advice. Thanks.
推荐答案
ms **** @ gmail.com 写道:
嗯,我有一个问题,这比理论更具理论性。我需要知道RTTI的好处。
我看到另一种做法...
A级{
公开:
~virtual A(){}
enum输入{X,Y,Z};
类型GetType(){return type_; }
私人:
类型type_;
}
B类:公共A {...}
现在,如果我想知道它是什么类型的类,我只需要调用一个
GetType方法。
我对任何建议都很满意。谢谢。
Well I''ve got a problem, that is more theoretical than practital. I
need to know benefits of RTTI. I see another way of doing it...
class A {
public:
~virtual A() {}
enum Type { X, Y, Z };
Type GetType() { return type_; }
private:
Type type_;
}
class B : public A { ... }
and now if I want to know what type of class it is I just call a
GetType method.
I''d be really pleased with any advice. Thanks.
完全适用于一组已知的类型。
-
Ian柯林斯。
Perfectly valid for a known set of types.
--
Ian Collins.
Ian Collins写道:
Ian Collins wrote:
ms **** @ gmail.com 写道:
ms****@gmail.com wrote:
>>嗯,我有一个问题,这比理论更重要practital。我需要知道RTTI的好处。我看到了另一种做法...
A类{
公开:
〜虚拟A(){}
枚举类型{X ,Y,Z};
输入GetType(){return type_; }
私人:
类型type_;
}
B类:公共A {...}
和现在,如果我想知道它是什么类型的类,我只需要调用一个
GetType方法。
我对任何建议都非常满意。谢谢。
>>Well I''ve got a problem, that is more theoretical than practital. I
need to know benefits of RTTI. I see another way of doing it...
class A {
public:
~virtual A() {}
enum Type { X, Y, Z };
Type GetType() { return type_; }
private:
Type type_;
}
class B : public A { ... }
and now if I want to know what type of class it is I just call a
GetType method.
I''d be really pleased with any advice. Thanks.
完全适用于一组已知的类型。
Perfectly valid for a known set of types.
我忘了指出GetType ()应该是虚拟的。
-
Ian Collins。
I forgot to point out that GetType() should be virtual.
--
Ian Collins.
ms **** @ gmail.com 写道:
嗯我已经遇到了问题,这比实际问题更具理论性。我需要知道RTTI的好处。
我看到另一种做法...
A级{
公开:
~virtual A(){}
enum输入{X,Y,Z};
类型GetType(){return type_; }
私人:
类型type_;
}
B类:公共A {...}
现在如果我想知道它是什么类型的类我只需要调用一个
GetType方法。
Well I''ve got a problem, that is more theoretical than practital. I
need to know benefits of RTTI. I see another way of doing it...
class A {
public:
~virtual A() {}
enum Type { X, Y, Z };
Type GetType() { return type_; }
private:
Type type_;
}
class B : public A { ... }
and now if I want to know what type of class it is I just call a
GetType method.
您的方法需要程序员进行某种类型的维护。
内置的typeid工具为你带来了所有的魔力。
我想你可以用模板构建类似的东西但是然后为什么 ?
Your method requires some type of maintenance by the programmer. The
built-in typeid facility does all the magic for you.
I suppose you could build somthing similar out of templates but then "why" ?
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