ios - swift 3 和 Alamofire : Extremely Slow Build Times

Question

因此，在诊断我的代码后，我将其缩小到一行导致我的整个项目的构建时间从几秒到几小时不等。我将参数传递给 Alamofire 以发送到我的 API，但它们会导致 Xcode 永远索引/构建。谁能知道为什么？

有问题的行

        var credit_union : String = ""
        var activity : String = ""
        var task : String = ""
        var billing_options : String = ""

        var sun : Float = 0
        var mon : Float = 0
        var tue : Float = 0
        var wed : Float = 0
        var thu : Float = 0
        var fri : Float = 0
        var sat : Float = 0
        var total : Float = 0

        var sun_notes : String = ""
        var mon_notes : String = ""
        var tue_notes : String = ""
        var wed_notes : String = ""
        var thu_notes : String = ""
        var fri_notes : String = ""
        var sat_notes : String = ""

        let approval : String = ""
        let department : String = currentUser.department
        let submitted : String = "Not Submitted"
        let date_of_time : Date = startDatePassing + 1.day
        let id : Int = 0


let parameters: Parameters = [
            "credit_union": credit_union,
            "activity": activity,
            "task" : task,
            "billing_options" : billing_options,
            "sun" : sun,
            "mon" : mon,
            "tue" : tue,
            "wed" : wed,
            "thu" : thu,
            "fri" : fri,
            "sat" : sat,
            "total" : total,
            "sun_notes" : sun_notes,
            "mon_notes" : mon_notes,
            "tue_notes" : tue_notes,
            "wed_notes" : wed_notes,
            "thu_notes" : thu_notes,
            "fri_notes" : fri_notes,
            "sat_notes" : sat_notes,
            "approval" : approval,
            "department" : department,
            "submitted" : submitted,
            "date_of_time" : date_of_time
        ]

Answer 1

因为有一个大字典字面值，所以构建需要很长时间。您可以尝试使用 dict[key] = value 语法创建字典。

let parameters: Parameters = {
    var dict = Parameters()
    dict["credit_union"] = credit_union
    dict["activity"] = activity
    // the rest of the KVPs goes here
    return dict
}()