Created
August 5, 2015 02:12
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determine the CollectionType or String is nil or empty
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| public protocol Emptiable { | |
| var isEmpty: Bool { get } | |
| } | |
| extension String: Emptiable {} | |
| extension Optional where T: Emptiable { | |
| public var isNilOrEmpty: Bool { | |
| guard let obj = self else { return true } | |
| return obj.isEmpty | |
| } | |
| } | |
| extension Optional where T: CollectionType { | |
| public var isNilOrEmpty: Bool { | |
| guard let obj = self else { return true } | |
| return obj.isEmpty | |
| } | |
| } |
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