GoF23 on ljf12825https://ljf12825.github.io/se/theory/design_pattern/gof23/Recent content in GoF23 on ljf12825Hugoen_USFri, 01 May 2026 00:00:00 +0000GoF23https://ljf12825.github.io/se/theory/design_pattern/gof23/gof23/Fri, 01 May 2026 00:00:00 +0000https://ljf12825.github.io/se/theory/design_pattern/gof23/gof23/overview of GoF