[boost] Re: lexical_cast to self

From: Arkadiy Vertleyb (vertleyb_at_[hidden])
Date: 2004-09-27 15:47:05

"Maxim Yegorushkin" <e-maxim_at_[hidden]> wrote

> In generic code lexical_cast<> is sometimes used as a cast to the same
> type. I would like to shortcut this rather then going all the way by
> writing it to a stream and reading back. In my code I use the following
> workaround:
>
> template<class U, class T>
> inline typename boost::disable_if<boost::is_same<T, U>, U>::type
> lexical_cast(T const& t)
> {
>      return boost::lexical_cast<U>(t);
> }
>
> template<class T>
> inline T const& lexical_cast(T const& t)
> {
>      return t;
> }
>
> Does it make any sense to put it in lexical_cast.hpp?

Unless somebody already started using it to get the first token from a
string, like:

boost::lexical_cast<string>(string("I am a string with spaces")); // now
returns just "I"

OTOH, the code like this probably deserves to be broken :)

Arkadiy