RPointArray 练习

RPointArray 练习

RPointArray 与 RArray 不同在于  RPointArray 保存的是指针，如果改变 RPointArray 中的元素值，则通过 Append 到
RPointArray 的对像的值也会改变，因为改变的都是同一对像
查找函数与排序函数与 RArray 是一样的

以下是练习的代码，没有查找函数

class TStudent
{
public:
 static TStudent* NewL(TDesC& aName,TInt aAge,TInt aScore)
 {
  TStudent* self = TStudent::NewLC(aName,aAge,aScore);
  CleanupStack::Pop();
  return self;
 }
 static TStudent* NewLC(TDesC& aName,TInt aAge,TInt aScore)
 {
  TStudent* self = new(ELeave) TStudent();
  CleanupStack::PushL(self);
  self->ConstructL(aName,aAge,aScore);
  return self;
 }
 void ToString(CConsoleBase* aConsole)
 {
  _LIT(KTmp,"Name=%S;Age=%d\nScore=%d\n");
  aConsole->Printf(KTmp,&iName,iAge,iScore);
 }
 TDesC& GetName()
 {
  return iName;
 }
 void SetName(TDesC& aName)
 {
  iName = aName;
 }
 const TInt GetScore() const
 {
  return iScore;
 }
 static TInt Order(const TStudent& t1,const TStudent& t2) 
 {
  if (t1.GetScore()>t2.GetScore())
  {
   return 1;
  } else
  if (t1.GetScore()<t2.GetScore())
  {
   return -1;
  } else
   return 0;
 }
private:
 TBuf<20> iName;
 TInt iAge;
 TInt iScore;
protected:
 void ConstructL(TDesC& aName,TInt aAge,TInt aScore)
 {
  iName = aName;
  iAge  = aAge;
  iScore = aScore;
 }
 
};
LOCAL_C void MainL(const TDesC& aArgs)
    {
    //
    // add your program code here, example code below
    //
    //console->Write(_L("Hello, world!\n"));
 RPointerArray<TStudent> aList;
 CleanupClosePushL(aList);
 _LIT(KLilei,"LiLei");
 _LIT(KxiaoNing,"xiaoNing");
 _LIT(Kxiaoxiao,"xiaoxiao");
 TBuf<20> BufLilei(KLilei);
 TBuf<20> BufXiaoxiao(Kxiaoxiao);
 TBuf<20> BufXN(KxiaoNing);
 TStudent *T1 = TStudent::NewL(BufLilei,20,80);
 TStudent *T2 = TStudent::NewL(BufXiaoxiao,20,82);
 TStudent *T3 = TStudent::NewL(BufXN,20,70);
 T1->ToString(console);
 /**/
 aList.AppendL(T1);
 aList.AppendL(T2);
 aList.AppendL(T3);
 TInt i;
 for(i=0;i<aList.Count();i++)
  aList[i]->ToString(console);
 ////
 // 改变第一个的 name
 _LIT(Kqi,"jianzhou");
 TBuf<20> BufQi(Kqi);
 aList[0]->SetName(BufQi);
 aList[0]->ToString(console);
 T1->ToString(console);

 for(i=0;i<aList.Count();i++)
  aList[i]->ToString(console);
 TLinearOrder<TStudent> ord1(TStudent::Order);
 aList.Sort(ord1);
 for(i=0;i<aList.Count();i++)
  aList[i]->ToString(console);
 aList.Reset();
 CleanupStack::PopAndDestroy();
    console->Printf(_L("Command line args: \"%S\"\n"), &aArgs);
    }

 

 

 

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安平2009@原创
qi_jianzhou@126.com