Method Parameters - LyQuocCuong/Note_CSharp GitHub Wiki 9) Comparision "in, ref, out" 8) Usage"out" 7) [Keyword] Out ? 6) [Keyword] In ? 5) Using Ref with [ReferenceType] 4) Using Ref with [ValueType] 3) [Keyword] Ref ? 2) [Keyword] Param? 1) Definition ? 0) Đọc lại khái niệm ValueType vs ReferenceType