Re: [boost] Re: auto_array

From: Howard Hinnant (hinnant_at_[hidden])
Date: 2000-10-02 17:30:20

David Abrahams wrote on 10/2/2000 5:56 PM
><snip> Hint: set "always use spaces for indentation" in your wonderful
>CodeWarrior IDE ;-)

Oh no!  Tab Wars! :-)

>> Admittedly, I was not actually using auto_array_ptr, because I needed to
>> traffic in uninitialized memory.  But it was a very close relative.  I
>> can easily see that vector is not always a drop-in replacement for
>> auto_array_ptr (but admit that it often can be).
>
>For the record, my use was similar to Howard's. Of course an
>auto_array_ptr<char> could work for uninitialized memory, couldn't it?

Sure.  More specifically, a specification for my container was that it 
allocate and deallocate all memory by using a possibly user-supplied 
allocator.  Thus my "auto_ptr" had to correctly call the allocator's 
deallocate.  I was really replacing vector<node*, 
allocator_type::rebind<node*>::other>, not vector<node*>.

For those of you who might be CodeWarrior Pro 6 owners (Dave ;-)), I am 
speaking of alloc_ptr found in <msl_utility>.  It is essentially auto_ptr 
on steroids.  It has yet to be determined whether all that steriod use 
will give it a short life or not. :-)

Greg Colvin wrote on 10/2/2000 6:19 PM
>And what, pray tell, is std::_Array?

The parametrization deleter function that we were previously speaking 
about (one which uses delete[]).

>And since when does std::auto_ptr take a second template parameter?

It has been an optional extension to the standard in Metrowerks 
CodeWarrior for approximately the past year.  It can be #ifdef'd out if 
it causes troubles with template templates.

-Howard