带有数组字符串的子字符串 - Swift

Question

我有一个数组:

var array = ["1|First", "2|Second", "3|Third"]

我如何切断"1 |","2 |","3 |"？
结果应如下所示:

println(newarray) //["First", "Second", "Third"]

Answer 1

你可以使用(假设字符串将包含"|"字符):

let newarray = array.map { $0.componentsSeparatedByString("|")[1] }

正如@Grimxn指出的那样,如果你不能假设"|" 字符将始终在字符串中,使用:

let newarray = array.map { $0.componentsSeparatedByString("|").last! }

要么

let newarray2 = array.map { $0.substringFromIndex(advance(find($0, "|")!, 1)) }

result2可能会快一点,因为它不会创建一个中间数组componentsSeparatedByString.

或者如果要修改原始数组:

for index in 0..<array.count {
    array[index] = array[index].substringFromIndex(advance(find(array[index], "|")!, 1))
}