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| // check the name is between 4 and 16 characters | |
| if !(4...16 ~= name.characters.count) { | |
| return false | |
| } | |
| // check that name doesn't contain whitespace or newline characters | |
| let range = name.rangeOfCharacterFromSet(.whitespaceAndNewlineCharacterSet()) | |
| if let range = range where range.startIndex != range.endIndex { | |
| return false | |
| } |
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