DateComparison.swift

public func < (lhs:Date?, rhs:Date?) -> Bool {
    let answer = false
    
    if let lhs = lhs{
        if let rhs = rhs{
            return lhs.isBefore(date: rhs)
        }
    }
    return answer
}
public func > (lhs:Date?, rhs:Date?) -> Bool {
    let answer = false
    
    if let lhs = lhs{
        if let rhs = rhs{
            return lhs.isAfter(date: rhs)
        }
    }
    return answer
}

extension Date{
    

    func  isBefore(date:Date?) -> Bool {
        
        if let date = date {
            if self.compare(date) == ComparisonResult.orderedAscending {
                return true
            }
        }
        return false
    }
    
    
    func  isAfter(date:Date?) -> Bool {
        let answer = false
        
        if let date = date {
            
            if self.compare(date) == ComparisonResult.orderedAscending {
                return  true
            }
            
        }
        return answer
    }

    
}