Re: [boost] [lexical_cast] A non-throwing lexical cast? [Was: 5 Observations - My experience with the boost libraries]

Subject: Re: [boost] [lexical_cast] A non-throwing lexical cast? [Was: 5 Observations - My experience with the boost libraries]
From: Bruno Santos (bsantos_at_[hidden])
Date: 2010-03-24 17:20:40

Qua, 2010-03-24 Ã s 09:31 +0000, pete_at_[hidden] escreveu:
> On Wed 24/03/10 03:40 , Jonathan Franklin <franklin.jonathan_at_[hidden]> wrote:
> 
> > On Tue, Mar 23, 2010 at 9:31 PM, Tom Brinkman  wrote:
> > > ... All I'm saying is that in the real world, most
> > > projects are mixed C/C++ and that the needs of both communities
> > need
> > > to be addressed if boost is going to remain relevent.
> 
> > For the sake of not arguing, let's assume that your assertion is
> > true.
> > Let's hear your *actionable* proposal for improving boost.  E.g.
> > show
> > us the better interface for <insert Boost library here>
> 
> Taking an example from way back at the start othis thread, in my personal experience a non-throwing version of lexical_cast<> would be very nice.
> 
> If I look at the cases where I pass user data through my libraries into boost libraries without some pre-validation, there are very few, and naturally these are the cases where the validation would as difficult as the "parse":
> 
> - boost::spirit::phrase_parse - Just returns a true/false, and I build a nice context-driven error message myself if necessary.
> - boost::lexical_cast - throws. Almost always needs to be caught and re-thrown.
> 
> 

Why? Is it because you need to do some cleanup? Do you known what RAII
is?

> 
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