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lang-cpp
boost::optional. Is there a document showing its acceptance into C++17? Edit: I guess this'll do: en.cppreference.com/w/cpp/utility/optionalstd::make_uniquerequires a template argument specifying the object type to create, it forwards the function arguments to that object's constructor, and it never returns an empty pointer. Creating an empty pointer is juststd::unique_ptr<myClass>{}; creating non-empty isstd::make_unique<myClass>(myClassCtorArgs...)