Re: Plea for addition of stream_cast

From: Miki Jovanovic (miki_at_[hidden])
Date: 2000-06-29 09:18:39

--- In boost_at_[hidden], "Ed Brey" <brey_at_a...> wrote:
> I agree with your take on (3), other than when conversion failures 
are not
> exceptional cases.  One problem is that if failures are frequent, 
exceptions
> may be too slow.  Also, there is the issue with how easy/cumbersome 
the code
> is to write.  A previous post [1] went into this in more detail,
but 
the
> summary is that try blocks work well when there are many
conversions 
and
> possibly other operations for which failure can be handled 
uniformly,
> whereas if there is unique recovery action for each potential failed
> conversion, then having the status returned is quite convenient.

I am not overly fond of pairs, but std does this on several 
occasions. How about the non-throwing lexical_cast to return a 
pair<Targer,bool> ?

Miki.