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Wrapped Hashable
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| extension Optional where Wrapped: Hashable { | |
| var hashValue: Int { | |
| switch self { | |
| case .some(let hashable): | |
| return hashable.hashValue | |
| default: | |
| return 0 | |
| } | |
| } | |
| } |
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Sorry to commenting on a 1 year old gist, but it's first in google search so:
What do you think of:
extension Optional where Wrapped: Hashable { public var hashValue: Int { return map { $0.hashValue } ?? 0 } }