이미 선언된 구조체에 operator 추가하여 sort

struct TestStruct
{
public:
    char    Msg[128];

    bool operator<(const TestStruct& a) const
    {
        return strcmp(Msg, a.Msg) < 0;
    }
};

void function()
{
    std::vector list;
    sort(list.begin(), list.end());
}

struct TestStruct
{
public:
    char    Msg[128];

    bool operator<(const TestStruct& a) const
    {
        return strcmp(Msg, a.Msg) < 0;
    }
};

void function()
{
    std::vector list;
    sort(list.begin(), list.end());
}

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