wxHashMap vs. std::map

[Dave Bee]

Just realized why I still prefer using wxString over
std:string in wx based programs:

1. wxString is easier to work with when handling
unicode (the wxConv and other conversion funcs are
time savers)

2. std::string throws exceptions. wx doesn't. It's
hard to start getting used again to exceptions when
the majority of the code assumes there are no
exceptions.

Am I wrong? :)

Thanks,
Dave


--- Dave Bee <davebeeus at yahoo.com> wrote:

> --- Vadim Zeitlin <vadim at wxwidgets.org> wrote:
> 
> > On Mon, 24 Sep 2007 15:13:23 -0700 (PDT) Dave Bee
> > <davebeeus at yahoo.com> wrote:
> > 
> > 
> >  In fact as Michael wrote in a later reply, these
> > classes have different
> > performance characteristics in general. std::map
> is
> > an ordered container while hash map isn't.
> 
> Oops. Sorry for missing Michael's reply (for some
> reason I didn't receive it in my email account). You
> (and Michael) are right, of course. I knew that
> std:map is implemented using a balanced tree, but I
> didn't know that wxHashMap isn't.
> 
> I thought that if wxHashMap is capable of something
> like:
> 
>   h2["Bill"] = "ABC";
> 
> (as illustrated in the wx manual), then it must be
> implemented just like std::map. Apparently I was
> wrong.
> 
> 
> >  std::string in VC7 and 8 uses small
> > string optimization which wxString lacks so it
> could
> > be much more efficient for small strings.
> 
> Thank your for this tip.
> 
> > 
> >  Anyhow, if performance is really critical for
> you,
> > you should write your
> > own benchmarks (or use some existing ones) and
> look
> > at the results.
> 
> Currently it is not critical. I was just curious and
> asked the question in case the answer is already
> known. I will certainly let you know when I perform
> such benchmarks.
> 
> Thanks,
> Dave
> 
> 
> 
>        
>
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