swift 按字符串将字符串拆分为数组

Posted 2021-05-19

extension String {
    func split(length: Int) -> [String] {
        return stride(from: 0, to: count, by: length).map({ i -> String in
            let start = index(startIndex, offsetBy: i)
            let end = index(start, offsetBy: length, limitedBy: endIndex) ?? endIndex
            return String(self[start..<end])
        })
    }
}