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semantic/prototype/Doubt/Optional.swift
2015-10-13 00:56:27 -04:00

13 lines
277 B
Swift

extension Optional {
static func equals(param: (Wrapped, Wrapped) -> Bool)(_ left: Wrapped?, _ right: Wrapped?) -> Bool {
switch (left, right) {
case let (.Some(a), .Some(b)):
return param(a, b)
case (.None, .None):
return true
default:
return false
}
}
}