我正在尝试理解C++11的概念。我所说的标准草案:Anxvalue(an“eXpiring”value)alsoreferstoanobject,usuallyneartheendofitslifetime(sothatitsresourcesmaybemoved,forexample).Anxvalueistheresultofcertainkindsofexpressionsinvolvingrvaluereferences(8.3.2).[Example:Theresultofcallingafunctionwhosereturntypeisanrvaluereferenceis