Swift 3 中的 For-In 循环多个条件

Question

如何使用for 循环并添加我的四个字符串值的数组。请检查以下代码：

let facilityID = FacilityID.map { "\($0)"}.joined(separator: ",")
let charges_per_km = ServiceChargesPerKilomiter.map { "\($0)"}.joined(separator: ",")
let charges_per_Minute = ServicChargesPerMinute.map { "\($0)"}.joined(separator: ",")

var request = URLRequest(url: URL(string: NetworkRequest.hostpath+"save_service_request.php")!)
request.httpMethod = "POST"

var data: [[String: Any]] = []

for i in 0..<facilityName.count {
    let dataArray =
        [
            "facility_id": (facilityID),
            "facility_name": facilityName[i],
            "charges_per_km": (charges_per_km),
            "charges_per_minute": (charges_per_Minute),
        ]

    data.append(dataArray)
}

如何在for 循环中添加设施ID、Charges_per_km 和charges_per_Minute？我已经在for in 循环中添加了facility_name。

谁能帮帮我？

Answer 1

假设您正在处理四个单独的数组并想要一个字典数组，您不需要（也不想要）那些map 语句。您可以执行以下操作：

var data = [[String: Any]]()

for i in 0 ..< facilityName.count {
    data.append([
        "facility_id": FacilityID[i],
        "facility_name": facilityName[i],
        "charges_per_km": ServiceChargesPerKilomiter[i],
        "charges_per_minute": ServicChargesPerMinute[i]
    ])
}

或者，如果您需要它们作为字符串：

var data = [[String: String]]()

for i in 0 ..< facilityName.count {
    data.append([
        "facility_id": "\(FacilityID[i])",
        "facility_name": facilityName[i],
        "charges_per_km": "\(ServiceChargesPerKilomiter[i])",
        "charges_per_minute": "\(ServicChargesPerMinute[i])"
    ])
}