swift的正则表达式(NSRegularExpression)

概述swift的正则表达式(NSRegularExpression) by 伍雪颖 import UIKit class ViewController: UIViewController {     override func viewDidLoad() {         super . viewDidLoad ()         let mailPattern =         "^([a-z swift的正则表达式(NSRegularExpression) @H_403_2@ by 伍雪颖 @H_403_2@
@H_403_2@ @H_403_2@ import UIKit

class VIEwController: UIVIEwController {

overrIDe func vIEwDIDLoad() {
super . vIEwDIDLoad ()
let mailPattern =
"^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$"
let matcher = RegexHelper (mailPattern)
let maybeMailAddress = "lesvio@qq.com"
if matcher. match (maybeMailAddress) {
println ( "valID email" )
}
}

struct RegexHelper {
let regex: NSRegularExpression ?
init ( _ pattern: String ) {
var error: NSError ?
regex = NSRegularExpression (
pattern: pattern,
options: .CaseInsensitive,
error: &error)
}

func match(input: String ) -> Bool {
if let matches = regex ?. matchesInString (input,
options: nil ,
range: NSMakeRange ( 0 , count (input))) {
return matches. count > 0
} else {
return false
}
}
} @H_403_2@ } 总结

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