Android学Dart学习笔记第九节 PatternsPatterns are a syntactic category in the Dart language, like statements and expressions. A pattern represents the shape of a set of values that it may match against actual values 译文:模式是Dart语言中的一个句法范畴,就像语句和表达式一样。模式表示一组值的形状,它可以与实际值匹配