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

Andrzej Krzemienski wrote:

2017-05-26 14:22 GMT+02:00 Peter Dimov via Boost :

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Andrzej Krzemienski wrote:

Maybe no-one uses expected<T> as function parameter, but consider this:

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expected g() { vector<T> v; // try to populate v; return v; // are you expecting a copy elision here? }

This should move (subject to a clarification in the core language though.)

Is this some recent addition?

Moving on return is C++11, but it only kicked in when the types were the same. In C++17, the wording is different and it seems that the intent is for the above to also move (assuming that expected<T> has a constructor taking T&&.)