ToArray causes an unassigned reference exception

Unity Engine
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1

this is my code:

IEnumerable<GameObject> temp = itemObj.items.OrderBy(itm => (int)itm.GetComponent<IItem>().id);
temp.ToArray();

it works without the ToArray, but with it, it gives an error on the first line:

“UnassignedReferenceException: The variable items of ItemsObject has not been assigned.”

itemObj is a scriptable object, items is an array of GameObjects.

items is assigned. how could trying to convert temp to an array cause items to be unassigned?

2

so the problem was in the anonymous function (itm => (int)itm.GetComponent().id)

some of my items that it was looking at were null.

3

Google “deferred execution lambda c#”

Until you reference temp, it really isn’t executing the assignment. So when you say it works without the ToArray(), that’s because it hasn’t done anything yet. Try doing a foreach with temp and it will likely fail. If you do it “old school” without lamda, you will likely find the issue.

EDIT - looks like you figured it out while I was typing.

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