Differences between boost::string_ref and boost::string_view

Question

Boost provides two different implementations of string_view, which will be a part of C++17:

• boost::string_ref in utility/string_ref

Answer 1

According to this email from the boost mailing list, boost::string_ref won't be used in the future and is being replaced by string_view in other boost libraries.

boost::string_view has the following advantages:

• Better matches what the standards committee is doing for C++17
• Has WAY more constexpr support