如何通过继承专门化复杂模板 - C++

发布于 2024-11-25 08:44:05 字数 468 浏览 1 评论 0原文

我似乎找不到正确的语法来专门化此模板：

template <class Object, class Var, class Invert, class Step = Var, unsigned int FIXED = IW_GEOM_POINT>
class TSin : public BasicTween<Object, Var> {...

我想保留

    template <class Object>
class TSin<Object, CIwVec2, int, CIwVec2, IW_GEOM_POINT> {...

这会产生错误。

请有人提供正确的语法来专门化模板和实例化专门版本的语法？

原文

I can't seem to find the right syntax to specialize this template :

template <class Object, class Var, class Invert, class Step = Var, unsigned int FIXED = IW_GEOM_POINT>
class TSin : public BasicTween<Object, Var> {...

I want to keep <Object> as a template parameter but specialize all other parameters. I am trying it like this :

    template <class Object>
class TSin<Object, CIwVec2, int, CIwVec2, IW_GEOM_POINT> {...

This gives errors.

Please can someone provide the right syntax to specialize the template and the syntax to instantiate the specialized version?

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眉目亦如画i 2024-12-02 08:44:05

我认为您的代码应该如下所示： http://ideone.com/cvGy3

您需要定义所有类型类实例化。

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何以笙箫默 2024-12-02 08:44:05

错误是您正在重新定义 class TSin。我认为你做不到。

您可以做的是声明通用模板并专门化类的定义：

template <class Object, class Var, class Invert, class Step = Var, 
    unsigned int FIXED = IW_GEOM_POINT>
    class TSin;
template <class Object>
    class TSin<Object, CIwVec2, int, CIwVec2, IW_GEOM_POINT> {...

或专门化类成员的定义：

template <class Object>
void TSin<Object, CIwVec2, int, CIwVec2, IW_GEOM_POINT>::Foo(...) {...

或声明子类：

template <class Object, class Var, class Invert, class Step = Var, 
    unsigned int FIXED = IW_GEOM_POINT>
    class TSin : public BasicTween<Object, Var> {...
template <class Object>
    class SpecialTSin::public TSin<Object, CIwVec2, int, CIwVec2, IW_GEOM_POINT>
{...

我认为后一种选择是最好的。

The error is you're redefining class TSin. I don't think you can do that.

What you can do is declare the generic template and specialize the definitions of the class:

template <class Object, class Var, class Invert, class Step = Var, 
    unsigned int FIXED = IW_GEOM_POINT>
    class TSin;
template <class Object>
    class TSin<Object, CIwVec2, int, CIwVec2, IW_GEOM_POINT> {...

or specialize the definitions of members of the class:

template <class Object>
void TSin<Object, CIwVec2, int, CIwVec2, IW_GEOM_POINT>::Foo(...) {...

or declare a subclass:

template <class Object, class Var, class Invert, class Step = Var, 
    unsigned int FIXED = IW_GEOM_POINT>
    class TSin : public BasicTween<Object, Var> {...
template <class Object>
    class SpecialTSin::public TSin<Object, CIwVec2, int, CIwVec2, IW_GEOM_POINT>
{...

I think the latter option is the best.

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