Generic Classes (T) - Specifying from a Range of Types VB.Net

Question

This is the code I\'m trying to develop:

  Public Structure Statistic(Of t)
        Dim maxStat As t
        Dim curStat As t

        Public Sub New(ByVal pValu         


        

Answer 1

Here you go... this should work.

Public Structure Statistic(Of t As {IComparable})
   Dim maxStat As t
   Dim curStat As t

   Public Sub New(ByVal pValue As t)
      maxStat = pValue
      curStat = pValue
   End Sub

   Public Property Level() As t
      Get
            Return curStat
      End Get
      Set(ByVal value As t)
            curStat = value
            If curStat.CompareTo(maxStat) > 0 Then curStat = maxStat
      End Set
   End Property
End Structure

Also, you mentioned constraining to numerics, but I don't think you can constrain to just that. You can however constrain to just primitive types (on the stack) and not allow objects (on the heap) by doing this: Public Structure Statistic(Of t As {Structure, IComparable}).

Answer 2

You could constrain T to IComparable. That way you know that curStat and maxStat both have a CompareTo method you can use to determine if one is greater than the other.