检查单词是否以元音或辅音开头

Question

我需要检查一个单词是否以元音或辅音开头，如下所示：

let word = "ciao"

if wordStartsWithVowel {
    print("Word starts with Vowel!")
}

我怎样才能做到这一点？

Answer 1

extension Character {\n    var isVowel: Bool { "aeiou".contains { String($0).compare(String(self).folding(options: .diacriticInsensitive, locale: nil), options: .caseInsensitive) == .orderedSame } }\n}\n

\n\n

extension StringProtocol {\n    var startsWithVowel: Bool { first?.isVowel == true }\n}\n

\n\n

"ciao".startsWithVowel     // false\n"Ciao".startsWithVowel     // false\n"Artic".startsWithVowel    // true\n"artic".startsWithVowel    // true\n"\xc3\x81rtico".startsWithVowel   // true\n"\xc3\xa1rtico".startsWithVowel   // true\n

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