Re: [boost] [string_ref] string literal constructor

2 Nov 2013


      AMDG

On 11/01/2013 04:42 PM, Michael Marcin wrote:
...
I noticed string_ref doesn't have a constructor for a string literal.
Wouldn't this save a call to strlen for a common case?
Ex.
template< std::size_t N >
basic_string_ref( const charT( &str )[N] )
    : basic_string_ref( str, N-1 )
{
    static_assert(N >= 1, "not a string literal");
}
string_ref test( "test" );
I see that adding this directly doesn't work as the compiler is always
choosing to decay and pick the const char* overload.
Is there no way to make this work?
The behavior is not guaranteed to be the same, anyway.
Not all char arrays are string literals.

In Christ,
Steven Watanabe