What are copy elision and return value optimization?
问题 What is copy elision? What is (named) return value optimization? What do they imply? In what situations can they occur? What are limitations? If you were referenced to this question, you\'re probably looking for the introduction. For a technical overview, see the standard reference. See common cases here. 回答1: Introduction For a technical overview - skip to this answer. For common cases where copy elision occurs - skip to this answer. Copy elision is an optimization implemented by most