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int index of Swift String
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| public extension String | |
| { | |
| func intIndex(of s: String) -> Int? | |
| { | |
| if let r = self.range(of: s) | |
| { | |
| return self.distance(from: self.startIndex, to: r.lowerBound) | |
| } | |
| else | |
| { | |
| return nil | |
| } | |
| } | |
| } |
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