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From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-11-09 01:39:58

Jonathan Turkanis wrote:

>> If a facet is used you can use the formatter with lexical_cast and the
>> program options library.
> I'm not yet familiar with the program options library. With lexical_cast,
> there's no way to specify a locale, so I guess you're talking about
> setting the global locale. Right? I'm afraid this might be bad manners,
> too. Mybe I can provide both options.

Or maybe lexical_cast is just bad solution. I recently wanted to read hex
number from stream, which lexical_cast does not support. I ended up writing
my own from_string class template which can be used like this:

   string s = "0x1A";
   int i = from_string<int>(std::hex)(s);

and the same class can be used to pass punctuator, as well:

   from_string<vector<int> >(punctuator(....))(s);

The obvious implementation is at

- Volodya

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