Re: [Boost-users] Unit Test problem with wstrings

From: Ben Hutchings (ben.hutchings_at_[hidden])
Date: 2005-11-15 06:53:56

Sean Rohead wrote:

>std::string narrow(std::wstring source)
>{
>    std::string result(source.size(), char(0));
>    typedef std::ctype<wchar_t> ctype_t;
>    const ctype_t& ct = std::use_facet<ctype_t>(std::locale());
>    ct.narrow(source.data(), source.data() + source.size(), '\u00B6',
>&(*result.begin()));
>    return result;
>}
>  
>
Not that this is likely to have anything to do with the error, but you 
mustn't use string::begin() like that. The sequence of characters is not 
guaranteed to be an array. If you want that guarantee, use a vector instead.

Ben.