Re: Cannot understand this memory leak.

From:
"Victor Bazarov" <v.Abazarov@comAcast.net>
Newsgroups:
comp.lang.c++
Date:
Thu, 24 Jan 2008 15:08:10 -0500
Message-ID:
<fnar79$cue$1@news.datemas.de>
Simon wrote:

// --
// in the header
std::vector<std::string> data;

//-------
// in the constructor
data.reserve(someKnownSize + 1);
..

//-------
// The destructor
// GONE! Yay! all simple

//-------
// in a function
void add( std::string &s, int len )
{
    data.push_back(std::string(s, len )) ;
}

//-------


Thanks, doing it this way is far easier and does work.
As mentioned the memset was probably the problem anyway.

The reason why I did this in the first place was because I was told
that push_back() was very time consuming.

As I know the size I was hopping that declaring an array would buy me
a few ticks.

do you think that using push_back is the fastest way I can fill my
array?


'push_back' is relatively fast in filling the pre-allocated vector
(for which you did 'reserve'), since it does not require any
reallocations. If you're concerned, profile your application to
see how much time is spent in 'push_back' and then decide if it is
acceptable.

V
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