Re: TCPL

From:

Obnoxious User <OU@127.0.0.1>

Newsgroups:

comp.lang.c++

Date:

Sat, 04 Oct 2008 08:14:08 -0500

Message-ID:

<NNGdnT9B0pK98XrVnZ2dnUVZ8g6dnZ2d@giganews.com>

On Sat, 04 Oct 2008 06:03:30 -0700, bashill.zhu@gmail.com wrote:

This is a program just for testing operator overloading. But I found the
operator ++ doesn't act like on built-in types. For detail: When
    int array[10];
    Ptr_to_T<int> smart_ptr(&array[0], array, 10); *smart_ptr++ = 10; //
    I want to modify array[0],but this sentence
modifies array[1]

Do I make myself clear?
Could some body tell me how to fix it ?

Ignore my first reply. I didn't look at the code close enough.

#include <iostream>
using namespace std;
template<typename T>
class Ptr_to_T
{
public:
    Ptr_to_T(T* p, T* array, int size):_p(p),_array(array),_size(size)
{}
    Ptr_to_T(T* p):_p(p){}
    Ptr_to_T& operator++(){//prefix
        _p += 1;
        return *this;
    }
    Ptr_to_T& operator++(int){//postfix
        cout << "Entering Operator++" << endl; T* temp = _p;
        _p += 1;
        return *this;
    }

    Ptr_to_T operator++(int){//postfix
        cout << "Entering Operator++" << endl;
    Ptr_to_T temp(*this);
        _p += 1;
        return temp;
    }

--
OU
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