Strange if/null behaviour

[rossko57]

@jimtng

Is there a way to check for the existence of an item without resorting to try

There is a alternative to “find Item by name string”. Before ScriptServiceUtil, we used to put Items in Groups and search Group by name. If there is no such member, you get a tidy null result and no error, and can deal with that in code
I still use this method where some Item may or may not have a “helper” or “associated” companion Item

EDIT - knew there was a previous, found it

[Rules DSL] Get item from string name!

I’m curious to see an example where other means could not be used to ensure that the Item exists. Using the ItemRegistry may be the easiest, but it comes with a performance hit, so it would be best to find another way. That said, there are other useful ItemRegistry methods. In Jython, I use this to check for the existence of an Item… if ir.getItems("Current_Timestamp") == []: This is not used in a rule, but in a script that is creating Items if they do not already exist. This uses ItemRegistr…

@jimtng

itemColor.sendCommand(“03030303”) // <<=== This is where the error occurred

I do not think that is a sensible thing to send to a Color Item, shouldn’t there be commas? It will fail with null components when it tries to parse the string?