Help with comparing decimal values from items

[A_Moktar]

I just want to compare two decimal values in if statement

if( (item.state as DecimalType) < (min.state as DecimalType) ){
  
}

vscode gives me error message

Ambiguous binary operation.
The operator declarations
	operator_lessThan(Number, Number) in NumberExtensions and
	operator_lessThan(Type, Number) in NumberExtensions
both match.(org.eclipse.xtext.xbase.validation.IssueCodes.ambiguous_feature_call)

[Charley]

Try item.state as Number

[rossko57]

In general, don’t cast stuff to types in DSL rules unless you have to. Let the interpreter sort it out.

Having said that, you do have to type for this because .state might be ON/OFF or whatever. But use the “native” rules type, as Number

Fuller explanation is further down in here.

Issue with final parameters when using lambda to create "function"

That is correct. The variables passed to a lambda are passed as vals, not vars so you cannot change them. One sort of work around is to use a collection (Map, List, etc) as the variable itself is a val but you can setill change the contents of the collection from inside your lambda. One thing to know about the way VSCode works is it connects to your actual OH server and runs the code through the exact same compiler that OH uses to parse and load the rules files. So errors that show up in VSCo…

Community search tool is quite good.

The next surprise you might run into with comparisons is Quantity Type Items, with units embedded.

[A_Moktar]

Thanks @Charley and @rossko57