Sort list by greater-functor : sort « Collections « Visual C++ .NET

1. Visual C++ .NET
2. Collections
3. sort

Sort list by greater-functor

 

#include "stdafx.h"
#include <cliext/list>

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));
    }
};
ref class MyGreaterThanFunctor{
public:
    bool operator()(MyClass^ a, MyClass^ b)
    {
        return a > b;
    }
};

int main(array<System::String ^> ^args)
{
    list<MyClass^> pets; 
    pets.push_front(gcnew MyClass("A")); 
    pets.push_front(gcnew MyClass("B"));
    pets.push_front(gcnew MyClass("C"));
    pets.push_front(gcnew MyClass("D"));


    list<MyClass^> puppies; 

    puppies.push_front(gcnew MyClass("E")); 
    puppies.push_front(gcnew MyClass("F"));

  pets.sort(gcnew MyGreaterThanFunctor());
  puppies.sort(greater<MyClass^>());
    pets.merge(puppies, greater<MyClass^>());

    for each (MyClass^ pet in pets) 
        System::Console::Write("{0} ", pet->Name); 

    return (0);
}

   
  

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