Re: [boost] [outcome] Possible extensions/changes to std::experimental::expected

Andrzej Krzemienski wrote:

Instead, rewrite observer functions like this:

bool has_value() const { if (BOOST_UNLIKELY(_is_in_empty_state())) __builtin_unreachable();

Please no. This is horrible. Actually it's doubly horrible; merely horrible would be putting the above in value(). In an observer function... it's just evil.