persistent data avalability within a VB component

Hello!

Because GH does not allow recursion between output and input of the same component, I thought I would solve my problem through an array (or other data type) declared within my VB component, but a very "persistent" array... so that these data may be available next time control will go from there, so that I can update data the second time, so that I can modify them next time and so on.

Well, is there a way to define the array in this way?

Thank you very much.

Replies to This Discussion

Permalink Reply by Chris Walsh on May 5, 2011 at 8:03am

Hello,

One method (though I'm not sure if it is the best) is to declare your list as 'static'. It will then persist its state through the objects lifetime.

http://msdn.microsoft.com/en-us/library/z2cty7t8(v=vs.80).aspx#Y339

Such as:

Static someList = new List(Of GH_Point)

Static stepNum As Integer = 0

etc.

Cheers,

Chris

Permalink Reply by Jordiweb on May 5, 2011 at 5:11pm

just what I wanted! thank you very much, Chris. For any beginner, like me, here's a sample VBcode:

Private Sub RunScript(ByVal x As List(Of Double), ByVal reset As Boolean, ByRef A As Object)

Static stepNum As Integer = 0 ' stepNum will be setted only the first time

If reset Then
stepNum = 0 ' stepNum will be RE-setted depending on the boolean parm "reset"
Exit Sub
End If

stepNum = stepNum + 1 ' stepNum is persistent, 'til next REset
Print("My static counter = " & stepNum) ' stepNum is growing!

' ... insert generic code here ...
' A = anyThingh

End Sub