#include <iostream>
#include <string>
using namespace std;

struct FalseType
{
    static bool Get()
    {
        return false;
    }
};

struct TrueType
{
    static bool Get()
    {
        return true;
    }
};

template<class T>
struct TypeTraits
{
    typedef FalseType PODTYPE;
};

template<>
struct TypeTraits<int>
{
    typedef TrueType PODTYPE;
};

template<>
struct TypeTraits<char>
{
    typedef TrueType PODTYPE;
};

template<>
struct TypeTraits<double>
{
    typedef TrueType PODTYPE;
};

template<>
struct TypeTraits<float>
{
    typedef TrueType PODTYPE;
};

template<class T>
void Copy(T* dst, const T* src, size_t size)
{
    // T是否为内置类型--通过类模板的特化来实现的
    if (TypeTraits<T>::PODTYPE::Get())
    {
        // memcpy是浅拷贝
        memcpy(dst, src, sizeof(T)*size);
    }
    else
    {
        for (size_t i = 0; i < size; ++i)
            dst[i] = src[i];
    }
}


int main()
{
    int array1[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
    int array2[sizeof(array1) / sizeof(array1[0])];

    Copy(array2, array1, sizeof(array1) / sizeof(array1[0]));


    string str1[] = { "1111", "2222", "3333", "4444" };
    string str2[4];
    Copy(str2, str1, sizeof(str1) / sizeof(str1[0]));

    return 0;
}