Duncan Mackenzie has too much time on his hands
In
a recent post to his blog, Paul Vick discusses the new
IsNot Operator (and the history/rational behind the
Is operator), which allows you to write;
If myString IsNot Nothing Then
instead of
If Not myString Is Nothing Then
and then,
in another post, he covers the new
TryCast operator (which is like C#'s 'as' operator), which will allow you to save a bit of extra work (and produce a slight perf improvement in some situations) when checking to see if an object can be cast to a specific type .... allowing you to write;
Sub Print(ByVal o As Object)
Dim PrintableObject As IPrintable _
= TryCast(o, IPrintable)
If PrintableObject IsNot Nothing Then
PrintableObject.Print()
End If
...
End Sub
instead of the slightly less efficient
Sub Print(ByVal o As Object)
Dim PrintableObject As IPrintable
If TypeOf o Is IPrintable Then
PrintableObject = CType(o, IPrintable)
PrintableObject.Print()
End If
...
End Sub
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