Visual C++ .NET/Collections/ICollection

Материал из .Net Framework эксперт
Версия от 12:05, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
(разн.) ← Предыдущая | Текущая версия (разн.) | Следующая → (разн.)
Перейти к: навигация, поиск

Append to ICollection

 
#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));
    }
};
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"));

    ICollection<MyClass^>^ genericIList = %pets;
    genericIList->Add(gcnew MyClass("E"));
  pets.sort();
    for each (MyClass^ pet in genericIList) 
        System::Console::Write("{0} ", pet->Name); 
    return (0);
}


Cast list to ICollection

 
#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));
    }
};
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"));

    ICollection<MyClass^>^ genericIList = %pets;
    genericIList->Add(gcnew MyClass("E"));
  pets.sort();
    for each (MyClass^ pet in genericIList) 
        System::Console::Write("{0} ", pet->Name); 
    return (0);
}


Using make_collection<>() to create ICollection from vector

 
#include "stdafx.h"
#include <cliext/vector>
#include <cliext/adapter>
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->Equals(rhs->Name));
    }
};

int main(array<System::String ^> ^args)
{
    vector<MyClass^> pets; 
    pets.push_back(gcnew MyClass("A")); 
    pets.push_back(gcnew MyClass("B"));
    pets.push_back(gcnew MyClass("C"));
    pets.push_back(gcnew MyClass("D"));
    ICollection<MyClass^>^ icMyClasss = make_collection(pets.begin() + 1,pets.end() - 1);
    for each (MyClass^ pet in icMyClasss) 
        System::Console::Write("{0} ", pet->Name); 
    return (0); 
}


vector for each loop -- subset ICollection<>

 
#include "stdafx.h"
#include <cliext/vector>
#include <cliext/adapter>
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->Equals(rhs->Name));
    }
};

int main(array<System::String ^> ^args)
{
    vector<MyClass^> pets; 
    pets.push_back(gcnew MyClass("A")); 
    pets.push_back(gcnew MyClass("B"));
    pets.push_back(gcnew MyClass("C"));
    pets.push_back(gcnew MyClass("D"));
    ICollection<MyClass^>^ icMyClasss = make_collection(pets.begin() + 1,pets.end() - 1);
    for each (MyClass^ pet in icMyClasss) 
        System::Console::Write("{0} ", pet->Name); 
    return (0); 
}