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                ### 枚舉類遍歷&枚舉常量常用屬性 ![](https://box.kancloud.cn/e433ac8536e45e61af020f407d4202af_517x336.png) 關于枚舉類,我們需要知道。枚舉是可以很方面的進行遍歷的。 每一個枚舉常量具有name屬性和ordinal屬性,name表示表示枚舉常量的名字,ordinal表示枚舉常量的順序,順序從0開始。參考代碼: ~~~ enum class Week { MON, TUE, WED, THU, FRI, SAT, SUN } fun printInfo(c: Week): Unit { when (c) { Week.MON -> println("今天是 星期一") Week.TUE -> println("今天是 星期二") Week.WED -> println("今天是 星期三") Week.THU -> println("今天是 星期四") Week.FRI -> println("今天是 星期五") Week.SAT -> println("今天是 星期六") Week.SUN -> println("今天是 星期日") } } fun main(args: Array<String>) { printInfo(Week.MON) println("--------枚舉遍歷集合--------") for (value in Week.values()) { println(value.name) } println("--------枚舉常量name屬性--------") println("Week.MON.name:${Week.MON.name}") println("-------枚舉常量ordinal屬性-------") println("Week.MON.ordinal:${Week.MON.ordinal}") } ~~~ 運行結果 ``` 今天是 星期一 --------枚舉遍歷集合-------- MON TUE WED THU FRI SAT SUN --------枚舉常量name屬性-------- Week.MON.name:MON -------枚舉常量ordinal屬性------- Week.MON.ordinal:0 Process finished with exit code 0 ```
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