Passing a Struct type that's within a class

[peterigzParticipant]

I was just trying to modify the way I remove things from a list due to the “Concurrent list modification” error you get now which is fine. What I had was a method that removed the item like this:

Monkey

[crayon-5cba1498e3e80820695952 inline="true" ] Method RemoveRect(r:tlBox) 'remove a boudning box from the node objects.Remove(r) numberofobjects-=1 r.quad = Null End

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[crayon-5cba1498e3e80820695952 inline="true" ] Method RemoveRect(r:tlBox) 'remove a boudning box from the node objects.Remove(r) numberofobjects-=1 r.quad = Null End

[/crayon]

Now I’d like to remove using the “Erase” method in the Iterator Struct but how do I pass that “type” to that method? Along the lines of:

Monkey

[crayon-5cba1498e3e85730637297 inline="true" ] Method RemoveRect(r:tlBox, i:List.Iterator) 'remove a boudning box from the node i.Erase() numberofobjects-=1 r.quad = Null End

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[crayon-5cba1498e3e85730637297 inline="true" ] Method RemoveRect(r:tlBox, i:List.Iterator) 'remove a boudning box from the node i.Erase() numberofobjects-=1 r.quad = Null End

[/crayon]

I’m actually going to redo it so I don’t need to pass in the iterator anyway but I’m still curious either way, is it possible?

[Mark SiblyKeymaster]

Not 100% sure what you mean here, but the general idea of the iterator ‘Erase’ method is that the iterator already points to the thing you want to erase, so the second RemoveRect doesn’t make sense to me: if ‘i’ doesn’t point to the ‘r’ you want to erase, you’ll need to find it first so ‘i’ is redundant. If ‘i’ does point to the ‘r’ you want to erase, then the ‘r’ is redundant!

 

 

[peterigzParticipant]

I was just curious about how you actually pass an iterator to a function. Or how do you pass a “type” that is a sub type (if that’s what it’s called) of a class. And in preparing an example I’ve actually found out how –

Monkey

[crayon-5cba1498ea48b872017276 inline="true" ]#Import "<std>" Using std.. Class tlQuadTreeNode End Function DoSomethingWithIterator(i:List<tlQuadTreeNode>.Iterator) End Function Main() Local list:=New List<tlQuadTreeNode> list.AddLast(New tlQuadTreeNode) Local it:=list.All() While not it.AtEnd DoSomethingWithIterator(it) it.Bump() Wend End

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[crayon-5cba1498ea48b872017276 inline="true" ]#Import "<std>"   Using std..   Class tlQuadTreeNode   End   Function DoSomethingWithIterator(i:List<tlQuadTreeNode>.Iterator) End   Function Main() Local list:=New List<tlQuadTreeNode> list.AddLast(New tlQuadTreeNode) Local it:=list.All() While not it.AtEnd DoSomethingWithIterator(it) it.Bump() Wend End

[/crayon]

Before I was just using List.Iterator without specifying the <generic> bit.

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