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xieweiAlex/String.alphanumeric

Created August 12, 2019 15:53
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Check string is alphanumeric
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String.alphanumeric
extension String {
var isAlphanumeric: Bool {
return !isEmpty && range(of: "[^a-zA-Z0-9]", options: .regularExpression) == nil
}
}
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"".isAlphanumeric // false
"abc".isAlphanumeric // true
"123".isAlphanumeric // true
"ABC123".isAlphanumeric // true
"iOS 9".isAlphanumeric // false

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