Set<String>をCharcterSetに置き換える
// before var japaneseChars : Set<String> { return Set(japaneseNumericalChars.keys) } // after var japaneseChars : CharacterSet { return CharacterSet(charactersIn: japaneseNumericalChars.keys.joined()) }
characterSetはSet
// before func checkType(_ str : String) -> Int { switch str { case str where japaneseChars.contains(str): return 0 case str where japaneseExpChars.contains(str): return 1 default: return 2 } } // after func checkType(_ str : String) -> Int { switch str { case str where str.rangeOfCharacter(from: japaneseChars) != nil: return 0 case str where str.rangeOfCharacter(from: japaneseExpChars) != nil: return 1 default: return 2 } }
参考 :
rangeOfCharacter(from:) - NSString | Apple Developer Documentation
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