From: XeCycle <xecycle@gmail.com>
Newsgroups: comp.lang.c++
Subject: Re: vector as a char buffer ?
References: <xn0hncrwwbo878g000@news.astraweb.com>
Date: Wed, 28 Dec 2011 12:27:50 +0800
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"Asger Joergensen" <Junk@Asger-P.dk> writes:

> Hi

Hello,

> I'm not that used to the stl so I ask to be on the safe side:
>
> typedef std::vector<char> TMembuf;
>  
> TMembuf buf(1000);
> char* p = &buf[0];
>
> I have tested it and it seem to work fine just like:
>
> char* p = new char[1000];
>
> and without the delete[];
>
> But is there any downside to doing like this ?

This is not recommended, of course.  You didn't even use any of
the vector facilities, in this case.  Vectors provide the method
reserve().

However if you want a buffer, there's circular buffer in boost
library.

-- 
Carl Lei (XeCycle)
Department of Physics, Shanghai Jiao Tong University
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