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[Swift]Stringから1文字目を取り出す方法メモ

Last updated at Posted at 2014-11-27

たったこれだけのことなのに、

ひと手間必要だったので、メモ

方法

以下のようなString型の変数があるとします。


let str: String = "HelloWorld"

ここから1文字目だけを取り出すには、以下のようにします。


let str: String = "HelloWorld"

let nsStr: NSString = str as NSString

let firstChar: String = nsStr.substringToIndex(1)

println(firstCha)	/// "H"


方法2 ※追記

sora0077 さんにコメントで教えていただきました。

こちらの方が簡単でわかりやすいですね!


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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