swift - 在 iOS Swift 中从字符串中提取子字符串

Question

我创建了一些字符串如下:

let firstname = ""
let lastname = ""    
let myInfo = "Dana<fname>Dana<lname>CEO<occupation>0123456<hp>01234567<wp>dana@gmail.com<email>"

我想从该字符串中提取某些部分。比如我想把<fname>之前的部分赋给firstname变量，把<lname>之前的部分赋给lastname变量。

Answer 1

只是一个快速的想法，可能有一些更简单的方法可以做到这一点:

let myInfo = "Dana<fname>Dana<lname>CEO<occupation>0123456<hp>01234567<wp>dana@gmail.com<email>"
let components = myInfo.components(separatedBy: CharacterSet(charactersIn: "<>"))

let values = components.enumerated().filter { $0.offset % 2 == 0 }.map { $0.element }
let keys = components.enumerated().filter { $0.offset % 2 == 1 }.map { $0.element }

var namedValues: [String: String] = [:]

for i in keys.indices {
    namedValues[keys[i]] = values[i]
}

print(namedValues)

然后只是:

let firstName = namedValues["fname"]
let lastName = namedValues["lname"]