用swift判斷string是否包含字母

/* string是要判斷的那個String */ let characterset = CharacterSet(charactersIn: string) let stringContain = string.rangeOfCharacter(from: characterset) if stringContain != nil{ /* 包含 */ }

/* 或 */
let stringContain1 = string .rangeOfCharacter(from: NSCharacterSet.letters)
if stringContain1 != nil{
/* 包含 */
}