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[Swift]Stringから1文字目を取り出す方法メモ ref: http://qiita.com/iKichiemon/items/4736110a80dab10177ea
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| let str: String = "HelloWorld" | |
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| let str: String = "HelloWorld" | |
| let nsStr: NSString = str as NSString | |
| let firstChar: String = nsStr.substringToIndex(1) | |
| println(firstCha) /// "H" | |
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| var str = "Hello, playground" | |
| //1文字目（0文字目） | |
| str[str.startIndex] | |
| //n文字目 | |
| let n = 5 | |
| str[advance(str.startIndex, n)] | |
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