如何解析“用于条件绑定的初始化器必须具有可选类型，而不是'Int'"? [英] How to resolve "Initializer for conditional binding must have Optional type, not 'Int'"?

问题描述

我已经看到了如何解决此错误的示例，但在我的情况下我无法使其正常工作.

I've seen examples of how to resolve this error but I can't get it to work in my case.

用于条件绑定的Initializer必须具有Optional类型，而不是'Int'

Initializer for conditional binding must have Optional type, not 'Int'

employeeCount 是否应该是可选的，因为它会推断出右侧?

Shouldn't employeeCount be optional since it is inferring the right side?

static func getEmployeeCount() -> Int {
    if let employeeCount = UserDefaults.standard.integer(forKey: "employeeCount") {
        return employeeCount as! Int
    }
    return 0
}

推荐答案

问题是

The problem is UserDefaults.standard.integer return Int, not Int?. So you don't need to wrap it with if let.

可选是否无关紧要.

在您的情况下，只需 return UserDefaults.standard.integer(forKey:"employeeCount")

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