UITableView

let cell = tableView.dequeueReusableCell(withIdentifier: "cell1")
return cell!

(cell!.contentView .viewWithTag(11) as!UILabel).text = "aaaa"
(cell?.viewWithTag(11) as!UILabel).text = "aaaa"

String

let contentHeight = 50
let rowHeight = contentHeight + ("aaaa".isPhone() ? 40 : 20)
print("rowHeight为\(rowHeight)")

分类

import Foundation
import UIKit

extension NSString{
    /*电话*/
    func isPhone() ->Bool{
        
        let MOBILE = "^1(3[0-9]|4[57]|5[0-35-9]|8[0-9]|7[06-8])\\d{8}$"
        
        
        return NSPredicate(format:"self matches %@",MOBILE).evaluate(with:self)
    }
    /*邮箱*/
    func isMail() ->Bool{
        
        let mailReg = "^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*$"
        
        return NSPredicate (format:"self matches %@",mailReg).evaluate(with:self)
        
    }
    /*邮箱或者电话中的一个*/
     func isOneOfPhoneAndMail()->Bool{
        
        if self.range(of:"@").location != NSNotFound {
            return self.isMail()
        }else{
            return self.isPhone()
        }
        
    }
}