为什么没有 C++ 的 DELETE 宏的原因

Are there any good reasons (except "macros are evil", maybe) NOT to use the following macros ?

#define DELETE( ptr ) 
if (ptr != NULL)      
{                     
    delete ptr;       
    ptr = NULL;       
}

#define DELETE_TABLE( ptr ) 
if (ptr != NULL)            
{                           
    delete[] ptr;           
    ptr = NULL;             
}

推荐答案

个人比较喜欢下面的

template< class T > void SafeDelete( T*& pVal )
{
    delete pVal;
    pVal = NULL;
}

template< class T > void SafeDeleteArray( T*& pVal )
{
    delete[] pVal;
    pVal = NULL;
}

它们最终编译成完全相同的代码.