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Public Structure Diamond
Private weight As Single
Private price As Decimal
Private fWeight As Boolean
Public Sub New(oz As Single, pr As Decimal)
weight = oz
price = pr
fWeight = True
End Sub
Public Property ByWeight() As Boolean
Get
Return fWeight
End Get
Set
fWeight = Value
End Set
End Property
Public ReadOnly Property Size() As Single
Get
Return weight
End Get
End Property
Public Shared Operator > (operand1 As Diamond, operand2 As Diamond) As Boolean
If operand1.Price / operand1.Size > operand2.Price / operand2.Size Then
Return True
Else
Return False
End If
End Operator
Public Shared Operator < (operand1 As Diamond, operand2 As Diamond) As Boolean
If operand1.Price / operand1.Size < operand2.Price / operand2.Size Then
Return True
Else
Return False
End If
End Operator
Public Shared Operator Or (op1 As Diamond, op2 As Diamond) As Diamond
If op1.ByWeight And op2.ByWeight
If op1 < op2 Then
Return op1
Else
Return op2
End If
Else
If op1.ByWeight Then
Return op1
ElseIf op2.ByWeight Then
Return op2
Else
Return Nothing
End If
End If
End Operator
Public Shared Operator IsTrue(Byval op1 As Diamond) As Boolean
If op1.ByWeight Then
Return True
Else
Return False
End If
End Operator
Public Shared Operator IsFalse(ByVal op1 As Diamond) As Boolean
If op1.ByWeight Then
Return False
Else
Return True
End If
End Operator
End Structure
Public Module modTest
Public Sub Main()
Dim a As Diamond = New Diamond(1, .3d)
Dim b As Diamond = New Diamond(2, .5d)
a.ByWeight = False
b.ByWeight = True
If a Or b Then Console.WRiteLine(a.Size)
If a OrElse b Then Console.WriteLine(a.Size)
Console.WriteLine(b < a)
End Sub
End Module
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