重载铸造问题 [英] overloaded casting question
问题描述
您好。我只是想知道什么是重载铸造操作员的语法
是。例如，我有
struct Point {
浮动x，y，z;
};
< br $>
struct Vector {
浮动a，b，c;
};
我想要能够做类似的事情
点p;
矢量v;
（（点）v ）.x ++;
谢谢
Hi. Im just wondering what the syntax to overload a casting operator
is. For example, i have
struct Point {
float x,y,z;
};
struct Vector {
float a,b,c;
};
and i want to be able to do somthing like
Point p;
Vector v;
((Point)v).x++;
thanks
推荐答案
laniik写道：
嗨。我只是想知道重载铸造操作员
的语法是什么。例如，我有
struct Point {
float x，y，z;
};
struct Vector {
float a ，b，c;
};
我希望能够做类似的事情
点p;
矢量v;
（（点）v）.x ++;
Hi. Im just wondering what the syntax to overload a casting operator
is. For example, i have
struct Point {
float x,y,z;
};
struct Vector {
float a,b,c;
};
and i want to be able to do somthing like
Point p;
Vector v;
((Point)v).x++;
我强烈建议不要这样做。你真正想要的是创建一个接口来处理Vector的元素，好像它们的名字是x，y或
z。你可以为它介绍成员函数。
struct Vector {
浮动a，b，c;
浮动& x（）{return a; }
};
现在写一下
vx（）++;
V
I would strongly advise against it. What you really want is to create
an interface to treat the Vector''s elements as if they had names x, y, or
z. You can introduce member functions for that.
struct Vector {
float a,b,c;
float& x() { return a; }
};
Now write
v.x()++;
V
Victor Bazarov写道：
Victor Bazarov wrote:
laniik写道：
laniik wrote:
嗨。我只是想知道重载铸造操作员
的语法是什么。例如，我有
struct Point {
float x，y，z;
};
struct Vector {
float a ，b，c;
};
我希望能够做类似的事情
点p;
矢量v;
（（点）v）.x ++;
Hi. Im just wondering what the syntax to overload a casting operator
is. For example, i have
struct Point {
float x,y,z;
};
struct Vector {
float a,b,c;
};
and i want to be able to do somthing like
Point p;
Vector v;
((Point)v).x++;
我强烈建议反对它。你真正想要的是创建一个接口来处理Vector的元素，就好像它们有x，y或
z一样。你可以为它介绍成员函数。
结构向量{
浮动a，b，c;
浮动& x（）{return a; }
};
现在写一下
vx（）++;
V
I would strongly advise against it. What you really want is to create
an interface to treat the Vector''s elements as if they had names x, y, or
z. You can introduce member functions for that.
struct Vector {
float a,b,c;
float& x() { return a; }
};
Now write
v.x()++;
V
另一种方法是从Point派生Vector.
V
Another way is to derive Vector from Point, of course.
V
Victor Bazarov写道：
Victor Bazarov wrote:
Victor Bazarov写道：
Victor Bazarov wrote:
laniik写道：
laniik wrote:
嗨。我只是想知道重载铸造操作员
的语法是什么。例如，我有
struct Point {
float x，y，z;
};
struct Vector {
float a ，b，c;
};
我希望能够做类似的事情
点p;
矢量v;
（点）v）.x ++;
Hi. Im just wondering what the syntax to overload a casting operator
is. For example, i have
struct Point {
float x,y,z;
};
struct Vector {
float a,b,c;
};
and i want to be able to do somthing like
Point p;
Vector v;
((Point)v).x++;
我强烈反对。你真正想要的是创建一个接口来处理Vector的元素，就好像它们有x，y或
z一样。你可以为它介绍成员函数。
结构向量{
浮动a，b，c;
浮动& x（）{return a; }
};
现在写了
vx（）++;
V
I would strongly advise against it. What you really want is to create
an interface to treat the Vector''s elements as if they had names x, y, or
z. You can introduce member functions for that.
struct Vector {
float a,b,c;
float& x() { return a; }
};
Now write
v.x()++;
V
另一种方法是从Point派生Vector.
V
Another way is to derive Vector from Point, of course.
V
< ack> < GAG> < splutter>
向量是一个点吗？
< / ack> < / GAG> < / splutter>
;-)
- g
-
Artie Gold - 德克萨斯州奥斯汀
http://it-matters.blogspot.com （12/5新帖）
http：//www.cafepress。 com / goldsays
<ack> <gag> <splutter>
Is a Vector a Point?
</ack> </gag> </splutter>
;-)
--ag
--
Artie Gold -- Austin, Texas
http://it-matters.blogspot.com (new post 12/5)
http://www.cafepress.com/goldsays
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