短語(yǔ)詞組短語(yǔ)Singleton Design Pattern 單態(tài)設(shè)計(jì)模式;單例模式;設(shè)計(jì)模式The Singleton Pattern 單例模式;單件模式Responsibility and the Singleton Pattern 責(zé)任制和單一模式Design Pattern Singleton 單一模式 返回 singleton pattern