Re: [Boost-users] string_ref and modifying underlying data

On Mon, Aug 3, 2015 at 8:27 AM, james wrote:

Hi,

I'm curious about the decision taken to not allow string_ref to modify the data it represents. I'm modifying our JSON parser to use it, and sometimes I need to normalise a field to uppercase or lowercase. Obviously I cannot now do this without making a copy of the normalised field somewhere with either std::string or boost::string_ref.

Consider the following code: const char *foo = "abcdef"; string_ref sr{foo, 6}; Given only "sr", how can you tell if it is possible to change the contents ? -- Marshall