Emcee

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import Foundation
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public struct DateSince1970ReferenceDate: Codable, Hashable, Comparable, ExpressibleByFloatLiteral, ExpressibleByIntegerLiteral {
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    public let date: Date
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    public init(timeIntervalSince1970: TimeInterval) {
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        date = Date(timeIntervalSince1970: timeIntervalSince1970)
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    }
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    public typealias FloatLiteralType = Double
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    public init(floatLiteral: TimeInterval) {
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        date = Date(timeIntervalSince1970: floatLiteral)
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    }
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    public typealias IntegerLiteralType = Int
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    public init(integerLiteral value: Int) {
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        date = Date(timeIntervalSince1970: TimeInterval(value))
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    }
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    public var timeIntervalSince1970: TimeInterval {
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        date.timeIntervalSince1970
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    }
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    public func addingTimeInterval(_ value: TimeInterval) -> Self {
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        return Self(timeIntervalSince1970: timeIntervalSince1970 + value)
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    }
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    public static func - (lhs: Self, rhs: IntegerLiteralType) -> Self {
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        return lhs.addingTimeInterval(-TimeInterval(rhs))
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    }
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    public static func + (lhs: Self, rhs: IntegerLiteralType) -> Self {
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        return lhs.addingTimeInterval(TimeInterval(rhs))
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    }
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    public static func - (lhs: Self, rhs: FloatLiteralType) -> Self {
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        return lhs.addingTimeInterval(-rhs)
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    }
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    public static func + (lhs: Self, rhs: FloatLiteralType) -> Self {
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        return lhs.addingTimeInterval(rhs)
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    }
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    public static func < (lhs: Self, rhs: Self) -> Bool {
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        lhs.date < rhs.date
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    }
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}
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