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Re: How to free this memory?

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"Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> wrote in message 
news:jeptmu$2v8$1@dont-email.me...
> On 13.01.2012 19:07, Paul <pchrist wrote:
>>
>> How would you extract a pointer from the vector?
>
> You can just take the address of an element, like
>
>   &v[0]
>
> or
>
>   &front()
>
> for a non-empty vector v.
>
> The vector buffer has been guaranteed contiguous since C++03.
>
> With C++11 there is also a data() member function that has both const and 
> non-const version, and that gives you &front() directly.
>
>
> Cheers & hth.,
>
> - Alf

Also i reply to Kevins post... I see the vector <bool> inconsistency and try 
to avoid vector<bool>. But I still feel uncomfortable taking the address of 
a vector element. There seems to be some dark looming uncomfortable danger 
attached to this, I just can't put my finger on it.
I can see no harm on a single thread application however I wonder if there 
may be implications on MT apps. For example if one thread has a pointer and 
a different thread has modified the vector, in such a way that the pointer 
is invalidated. What I am getting at is, even with STL containers, 
programmers still need to tread carefully.

In some appications, or programs,  the STL container is the perfect 
solution. but I don't think this is always the case. I believe there is 
still a large userbase who require the raw memory managment features of C++.
STL allocators are a very usefull, not to mention productive, feature of C++ 
but they are an abstract feature. The basic laguage does not restrict its 
useage to this abstract feature and for this we should be thankfull. C++ is 
a powerfull programming language because it has so many different features, 
we can use C++ as a Java like language(high level), or as a C like 
language(low level) it has many different features and I think this is an 
important aspect of its success.

I think the STL part of the C++ language is just one aspect of its many uses 
and should not be emphasised to be any more important that the other 
aspects. It woud be great if in the future we had one common programming 
language , based on binary. But lets wait and see what happens with quantumn 
computers, maybe binary is a bit retarded and we need to start thiking in 
3's, who knows. Actually quantum is all about two's( the atom is either in 
the box or not in the box) so maybe our knowledge of binary and quantumn fit 
together well.



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How to free this memory? Bint <bint@ign.com> - 2012-01-13 11:05 -0600
  Re: How to free this memory? "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-01-13 18:37 +0100
    Re: How to free this memory? "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-13 18:07 +0000
      Re: How to free this memory? "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-01-13 19:38 +0100
        Re: How to free this memory? "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-13 20:35 +0000
          Re: How to free this memory? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-14 02:16 -0800
          Re: How to free this memory? Kevin McCarty <kmccarty@gmail.com> - 2012-01-16 09:08 -0800
      Re: How to free this memory? Kevin McCarty <kmccarty@gmail.com> - 2012-01-13 10:48 -0800
        Re: How to free this memory? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-14 02:19 -0800
          Re: How to free this memory? Kevin McCarty <kmccarty@gmail.com> - 2012-01-16 08:56 -0800
    Re: How to free this memory? Leigh Johnston <leigh@i42.co.uk> - 2012-01-13 18:16 +0000
  Re: How to free this memory? "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-13 17:37 +0000
    Re: How to free this memory? Leigh Johnston <leigh@i42.co.uk> - 2012-01-13 17:47 +0000
      Re: How to free this memory? Bint <bint@ign.com> - 2012-01-13 12:04 -0600
        Re: How to free this memory? Leigh Johnston <leigh@i42.co.uk> - 2012-01-13 18:10 +0000
          Re: How to free this memory? "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-13 19:20 +0000
            Re: How to free this memory? Leigh Johnston <leigh@i42.co.uk> - 2012-01-13 19:27 +0000
              Re: How to free this memory? "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-13 19:52 +0000
                Re: How to free this memory? Leigh Johnston <leigh@i42.co.uk> - 2012-01-13 20:33 +0000
                Re: How to free this memory? "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-13 20:52 +0000
                Re: How to free this memory? David Dyer-Bennet <dd-b@dd-b.net> - 2012-01-13 15:01 -0600
                Re: How to free this memory? BCFD36 <bcfd36@cruzio.com> - 2012-01-14 02:01 -0800
                Re: How to free this memory? "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-13 15:46 -0600
                Re: How to free this memory? Leigh Johnston <leigh@i42.co.uk> - 2012-01-13 21:59 +0000
                Re: How to free this memory? Goran <goran.pusic@gmail.com> - 2012-01-13 22:12 -0800
                Re: How to free this memory? Leigh Johnston <leigh@i42.co.uk> - 2012-01-14 11:58 +0000
            Re: How to free this memory? Goran <goran.pusic@gmail.com> - 2012-01-13 22:01 -0800
        Re: How to free this memory? Victor Bazarov <v.bazarov@comcast.invalid> - 2012-01-13 13:48 -0500
        Re: How to free this memory? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-14 20:46 +0000
    Re: How to free this memory? Bint <bint@ign.com> - 2012-01-13 11:54 -0600
  Re: How to free this memory? Travis Vitek <travis.vitek@gmail.com> - 2012-01-13 09:21 -0800
    Re: How to free this memory? jgk@panix.com (Joe keane) - 2012-01-14 01:03 +0000

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