我不用“OIOIC對(duì)象模型”

zhujiang73

原帖由 doctorjxd 于 2007-9-17 20:22 發(fā)表
樓主為什么不對(duì)91樓的代碼回應(yīng)？

因?yàn)?Pervise 不是本樓的業(yè)主。

yuanchengjun

virtual f() {   直接父類1::f();   直接父類2::f();   …… }

省略號(hào)表示當(dāng)前類在f函數(shù)中要做的事情。
如果是自底向上調(diào)用一邊，那么省略號(hào)放到f函數(shù)最前面。

ococi怎么寫？

[ 本帖最后由 yuanchengjun 于 2007-9-17 20:48 編輯 ]

yuanchengjun

原帖由 Pervise 于 2007-9-17 20:46 發(fā)表


你直接從O1~O12逐個(gè)調(diào)用，那不更簡(jiǎn)單。

當(dāng)你調(diào)用O11的時(shí)候呢？是不是又要重新寫一遍？
我這么處理，每個(gè)類的f函數(shù)，都有你說的效果。

yuanchengjun

原帖由 Pervise 于 2007-9-17 20:58 發(fā)表


每個(gè)對(duì)象都不用理會(huì)在它后面會(huì)有什么樣的繼承，做好自己的事情就行了。

對(duì)于每個(gè)對(duì)象來說是對(duì)；

但是對(duì)于每一個(gè)類來說呢？
只有最底層類才創(chuàng)建對(duì)象嗎？
所有繼承鏈中間類都不實(shí)例化對(duì)象了？
如果實(shí)例化對(duì)象，是不是要重新實(shí)現(xiàn)一邊整個(gè)調(diào)用過程呢？

doctorjxd

原帖由 Pervise 于 2007-9-17 20:58 發(fā)表


每個(gè)對(duì)象都不用理會(huì)在它后面會(huì)有什么樣的繼承，做好自己的事情就行了。

yuanchengjun 也是這樣做的呀。

zhujiang73

原帖由 Pervise 于 2007-9-17 20:34 發(fā)表



在每一個(gè)O里加入同一行為，通過訪問O12觸發(fā)這個(gè)行為，進(jìn)而按從上到下、從左到右的順序，不可重入地，調(diào)用每一個(gè)O的同一行為�？茨阍趺磳�(shí)現(xiàn)？

是要這個(gè)么？

#include <iostream> class O1 { &nbsp;&nbsp;&nbsp;public:   &nbsp;&nbsp;&nbsp;&nbsp;int  a1;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O1" << std::endl; }; }; class O2 :virtual public  O1 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a2;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O2" << std::endl; }; }; class O3 :virtual public O1 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a3;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O3" << std::endl; }; }; class O4 :virtual public O1 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a4;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O4" << std::endl; }; }; class O5 :virtual public O2 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a5;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O5" << std::endl; }; }; class O6 :virtual public O2, virtual public O3 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a6;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O6" << std::endl; }; }; class O7 :virtual public O3, virtual public O4 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a7;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O7" << std::endl; }; }; class O8 :virtual public O4 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a8;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O8" << std::endl; }; }; class O9 :virtual public O5, virtual public O6 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a9;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O9" << std::endl; }; }; class O10 :virtual public O6, virtual public O7 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a10;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O10" << std::endl; }; }; class O11 :virtual public O7, virtual public O8 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a11;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O11" << std::endl; }; }; class O12 :virtual public O9, virtual public O10, virtual public O11 { &nbsp;&nbsp;&nbsp;public: &nbsp;&nbsp;&nbsp;&nbsp;int   a12;    &nbsp;&nbsp;&nbsp;&nbsp;void show () { std::cout << "O12" << std::endl; }; &nbsp;&nbsp;&nbsp;&nbsp;void show_all(); }; void  O12::show_all() { &nbsp;&nbsp;&nbsp;&nbsp;O1::show(); &nbsp;&nbsp;&nbsp;&nbsp;O2::show(); &nbsp;&nbsp;&nbsp;&nbsp;O3::show(); &nbsp;&nbsp;&nbsp;&nbsp;O4::show(); &nbsp;&nbsp;&nbsp;&nbsp;O5::show(); &nbsp;&nbsp;&nbsp;&nbsp;O6::show(); &nbsp;&nbsp;&nbsp;&nbsp;O7::show(); &nbsp;&nbsp;&nbsp;&nbsp;O8::show(); &nbsp;&nbsp;&nbsp;&nbsp;O9::show(); &nbsp;&nbsp;&nbsp;&nbsp;O10::show(); &nbsp;&nbsp;&nbsp;&nbsp;O11::show(); &nbsp;&nbsp;&nbsp;&nbsp;O12::show(); } int main(int argc, char *argv[]) { &nbsp;&nbsp;&nbsp;&nbsp;O12  *p_12; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;p_12 = new O12; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a1 = 1; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a2 = 2; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a3 = 3; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a4 = 4; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a5 = 5; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a6 = 6; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a7 = 7; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a8 = 8; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a9 = 9; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a10 = 10; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a11 = 11; &nbsp;&nbsp;&nbsp;&nbsp;p_12->a12 = 12; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;std::cout << "p_12->a1 = " << p_12->a1 << std::endl; &nbsp;&nbsp;&nbsp;&nbsp;std::cout << "p_12->a7 = " << p_12->a7 << std::endl; &nbsp;&nbsp;&nbsp;&nbsp;std::cout << "p_12->a9 = " << p_12->a9 << std::endl; &nbsp;&nbsp;&nbsp;&nbsp;std::cout << "p_12->a12 = " << p_12->a12 << std::endl; &nbsp;&nbsp;&nbsp;&nbsp;p_12->show_all(); &nbsp;&nbsp;&nbsp;&nbsp;delete  p_12; &nbsp;&nbsp;&nbsp;&nbsp;return 0; }