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From: Dave Dribin (dave-ml_at_[hidden])
Date: 2005-05-27 15:08:53

On May 12, 2005, at 8:59 AM, Kevlin Henney wrote:
> I think that the specialisation (conceptual as opposed to templated)
> perspective is the right way to go. lexical_cast caters for a general
> need, but not all specific needs (it is stream-based and not
> performance-centric), so functions that cater to more specific
> conversions -- convert_to with default, string_to, etc -- seem to make
> sense. It is not a load that lexical_cast should be carrying all of,

Unfortunately, writing a performance centric convert_to is not a load I
want to carry. For me, the lexical_cast and hence stream-based
performance is just fine for our app. All I want is a default value
without littering my code with try/catch statements (of if statements,
even). For now, I'm just going to patch my version of lexical_cast.hpp
with my original patch or maybe move that to an external header that
relies on the Boost internals. We don't mind if it doesn't quite look
like a cast. I guess for us, no try/catch statements trumps quasi-cast
semantics and non-optimal performance. If someone wants to tackle a
performance centric convert_to or string_to, lemme know and I'll test
it, but I'm not going to push this issue any more.


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