1.判斷是否數(shù)字

? ? // - Parameter string: <#string description#>

/// - Returns: <#return value description#>

class func isPurnInt(string: String) -> Bool {

? ? ? ? let scan: Scanner = Scanner(string:string)

? ? ? varval:Int =0returnscan.scanInt(&val) && scan.isAtEnd

? ? }

2、提取字符串里的數(shù)字

從字符串中提取數(shù)字

class func getIntFromString(str:String) -> String {

? ? ? ? let scanner = Scanner(string: str)

? ? ? ? scanner.scanUpToCharacters(from: CharacterSet.decimalDigits, into: nil)

? ? ? ? varnumber :Int =0? ? ? ?

? ? ? ? scanner.scanInt(&number)

? ? ? ? print(number)

? ? ? ? return String(number)

? ? }