Re: [Boost-users] [lexical_cast] Some code that was compiling in 1.50 stopped compiling in 1.53

Subject: Re: [Boost-users] [lexical_cast] Some code that was compiling in 1.50 stopped compiling in 1.53
From: Alain Leblanc (aalebl_at_[hidden])
Date: 2013-03-16 23:08:04

2013/3/16 Antony Polukhin <antoshkka_at_[hidden]>

> 2013/3/16 Antony Polukhin <antoshkka_at_[hidden]>:
> > 2013/3/15 Alain Leblanc <aalebl_at_[hidden]>:
> >> Here's some code that has been compiling till at least 1.50, and
> starting
> >> long before. I isolated the part that breaks to create a program.
> >>
> >> Here it is: Just taking a std::vector of int and copying into strings.
> >>
> >> #include <boost/lexical_cast.hpp>
> >> #include <vector>
> >> #include <string>
> >>
> >> using namespace std;
> >>
> >> int main (int, char **) {
> >>   vector<int> values;
> >>   vector<string> ret;
> >>   std::transform(values.begin(), values.end(), ret.begin(),
> >> boost::lexical_cast<std::string, int>);
> >> }
> >
> > That is strange, I remember fixing that... I'll check everything once
> more.
>
> You were right, I've accidentally removed the fix in one of the
> commits (fixed it in trunk).
> You may use solution poposed in previous letter, take lexical_cast
> from boost trunk http://svn.boost.org/svn/boost/trunk/ or just replace
> in boost/lexical_cast.hpp following code:
>
>     template <typename Target, typename CharType>
>     inline Target lexical_cast(const CharType* chars, std::size_t count)
>     {
>
> BOOST_STATIC_ASSERT_MSG(boost::detail::is_char_or_wchar<CharType>::value,
>             "CharType must be a character or wide character type");
>
>         return boost::lexical_cast<Target>(
>             boost::iterator_range<const CharType*>(chars, chars + count)
>         );
>     }
>
>
> with
>
>
>     template <typename Target>
>     inline Target lexical_cast(const char* chars, std::size_t count)
>      {
>         return ::boost::lexical_cast<Target>(
>             ::boost::iterator_range<const char*>(chars, chars + count)
>         );
>     }
>
>
>     template <typename Target>
>     inline Target lexical_cast(const unsigned char* chars, std::size_t
> count)
>     {
>          return ::boost::lexical_cast<Target>(
>             ::boost::iterator_range<const unsigned char*>(chars, chars +
> count)
>          );
>      }
>
>     template <typename Target>
>     inline Target lexical_cast(const signed char* chars, std::size_t count)
>     {
>         return ::boost::lexical_cast<Target>(
>             ::boost::iterator_range<const signed char*>(chars, chars +
> count)
>         );
>     }
>
> #ifndef BOOST_LCAST_NO_WCHAR_T
>     template <typename Target>
>     inline Target lexical_cast(const wchar_t* chars, std::size_t count)
>     {
>         return ::boost::lexical_cast<Target>(
>             ::boost::iterator_range<const wchar_t*>(chars, chars + count)
>         );
>     }
> #endif
> #ifndef BOOST_NO_CHAR16_T
>     template <typename Target>
>     inline Target lexical_cast(const char16_t* chars, std::size_t count)
>     {
>         return ::boost::lexical_cast<Target>(
>             ::boost::iterator_range<const char16_t*>(chars, chars + count)
>         );
>     }
> #endif
> #ifndef BOOST_NO_CHAR32_T
>     template <typename Target>
>     inline Target lexical_cast(const char32_t* chars, std::size_t count)
>     {
>         return ::boost::lexical_cast<Target>(
>             ::boost::iterator_range<const char32_t*>(chars, chars + count)
>         );
>     }
> #endif
>
> --
> Best regards,
> Antony Polukhin
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>

Thanks Greg and Antony. I modified my code following Antony's suggestion
and it works fine.

a