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neauoire/String.substring

Created October 8, 2015 15:52
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String.substring
import Foundation
extension String
{
func subString(start: Int, length: Int) -> String
{
let range = Range<String.Index>(start: startIndex.advancedBy(start), end: startIndex.advancedBy(start + length))
return self.substringWithRange(range)
}
}
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