你可以使用下面的函数来获得一个充满Data
对象:
func getDesiredData(formattedString: String, dateFormat: String, separator: String) -> Data? {
let array = formattedString.components(separatedBy: separator)
//print(array.count)
if array.count < 6 {
// something went wrong seprating the formatted string
return nil
}
guard let d1 = Double(array[1]), let d2 = Double(array[2]), let d3 = Double(array[3]), let d4 = Double(array[4]), let i1 = Int(array[5]) else {
// something went wrong when converting string to doubles/int
return nil
}
var formatter = DateFormatter()
formatter.dateFormat = dateFormat
let date = formatter.date(from: array[0])
return Data(DT: date, D1: d1, D2: d2, D3: d3, D4: d4, I1: i1)
}
正如你可以在函数签名看,你可以自由添加所需:
formattedString
,为例如:“yyyyMMdd;%f;%f;%f;%f;%d”。
dateFormat
,例如:“yyyyMMdd”。
separator
,例如:“,”或“;”。
输出:
// happy case ";":
let test1 = getDesiredData(formattedString: "20170924;1.1;2.2;3.3;4.4;100", dateFormat: "yyyyMMdd", separator: ";")
dump(test1)
// happy case ",":
let test2 = getDesiredData(formattedString: "20170924,1.1,2.2,3.3,4.4,100", dateFormat: "yyyyMMdd", separator: ",")
dump(test2)
// wrong format:
let test3 = getDesiredData(formattedString: "wrong;format;goes;here", dateFormat: "yyyyMMdd", separator: ";")
dump(test3) // nil
// wrong separator:
let test4 = getDesiredData(formattedString: "20170924;1.1;2.2;3.3;4.4;100", dateFormat: "yyyyMMdd", separator: "!")
dump(test4) // nil
为了使它更清楚,您可以加入预期的结果的例子吗? –
我想要数据[0] .DT == 2017-09-24 00:00:00 UTC data [0] .D1 == 1.1 ...和data [0] .I1 == 100 – Anton