Re: Opinions on introduction of string_view in Core

From: Peter Dimov (pdimov_at_[hidden])
Date: 2021-10-18 01:26:34

Andrey Semashev wrote:
> > How would that work, exactly? Take the example function signature and
> > show us how it's done.
> 
>   boost::string_view get_string();
> 
>   template< typename String >
>   String get_string()
>   {
>     boost::string_view res = get_string();
>     return String(res.data(), res.size());
>   }

The function is

    boost::string_view api_function( boost::string_view str );

If we apply the technique above,

    api_function( "something" );

will return boost::string_view, and C++17 users will have the option
of using

    auto r = api_function<std::string_view>( "something" );

Again, this works, but isn't exactly optimal. C++17 users are penalized
for no good reason.