如何使用枚举来简化和改进它，快速学习，枚举 [英] how to simplify and make it better using enum, swift learning, enum

问题描述

我正在通过以下方式定义一些范围

I am defining some of ranges by following

let range0_15   =   0 ..< 15
let range15_30  =   15 ..< 30
let range30_45  =   30 ..< 45
let range45_60  =   45 ..< 60

我真的很想尝试使用Enum

enum range : Range<Int> {
    range0_15   =   0 ..< 15
    range15_30  =   15 ..< 30
    range30_45  =   30 ..< 45
    range45_60  =   45 ..< 60
}

我遇到错误

Type 'CoreDataStach.range' does not comform to protocol RawRepresentable

是否可以像上面那样定义一个枚举，如果是，那么我在这里缺少什么.

Is it possible to define an enum like above and if it is yes, what I am missing right here.

推荐答案

使用结构体尝试类似方法可能会更好.

You might be better off trying something like this using a struct.

struct Ranges{
    static let range0_15   =   0 ..< 15
    static let range15_30  =   15 ..< 30
    static let range30_45  =   30 ..< 45
    static let range45_60  =   45 ..< 60
}

if Ranges.range0_15.contains(6){ //Test to true
    print("inside range")//Prints "inside range"
}

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