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| Use functor greater() as ordering rule |
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#include "stdafx.h"
#include <cliext/queue>
using namespace System;
using namespace cliext;
using namespace System::Collections::Generic;
ref class MyClass{
public:
String^ Name;
MyClass() : Name(String::Empty) { }
MyClass(String^ name) : Name(name) { }
MyClass(const MyClass% orig){
Name = orig.Name;
}
MyClass% operator=(const MyClass% orig){
if (this != %orig)
Name = orig.Name;
return *this;
}
~MyClass() { }
bool operator<(const MyClass^ rhs){
return (Name->CompareTo(rhs->Name) < 0);
}
bool operator>(const MyClass^ rhs){
return (Name->CompareTo(rhs->Name) > 0);
}
bool operator==(const MyClass^ rhs)
{
return (Name->Equals(rhs->Name));
}
};
int main(array<System::String ^> ^args)
{
priority_queue<MyClass^> petpq;
petpq.push(gcnew MyClass("A"));
petpq.push(gcnew MyClass("B"));
petpq.push(gcnew MyClass("C"));
petpq.push(gcnew MyClass("D"));
priority_queue<MyClass^> petpqr = priority_queue<MyClass^>(greater<MyClass^>());
petpqr.push(gcnew MyClass("E"));
petpqr.push(gcnew MyClass("F"));
petpqr.push(gcnew MyClass("G"));
petpqr.push(gcnew MyClass("H"));
while (!petpqr.empty())
{
Console::Write("{0} ", petpqr.top()->Name);
petpqr.pop();
}
return 0;
}
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