ios - 定义结构时的错误信息

Question

我正在用 Swift 编写一个结构体:

struct LevelDictionary {
    let kNumberOfSegments: Int = 10

    static func loadLevelData() -> NSDictionary {
        for var segmentNumber = 0; segmentNumber < kNumberOfSegments; ++segmentNumber {
       //My code here
        }
    return dictionary
    }
}

出于某种原因，我在编译时遇到错误:Instance member 'kNumberOfSegments' cannot be used on type 'LevelDictionary'。我错过了什么？当我将 LevelDictionary 设置为类时，我遇到了同样的错误。

Answer 1

loadLevelData() 是在“类”级别调用的静态函数

LevelDictionary.loadLevelData()

要在静态函数中使用kNumberOfSegments，它也必须是静态的

static let kNumberOfSegments: Int = 10