Trouble with type checking callback function passed as a parameter

With type checking turned on, I am having trouble with this line:

Communications.makeWebRequest(compURL,

{},

method(:onReceiveData)

);

The compiler complains about the callback function parameter as follows:

Invalid '$.Toybox.Lang.Method(responseCode as $.Toybox.Lang.Number, data as $.Toybox.Lang.String) as Void' passed as parameter 4 of type 'PolyType<(callback(responseCode as $.Toybox.Lang.Number, data as Null or $.Toybox.Lang.Dictionary or $.Toybox.Lang.String) as Void) or (callback(responseCode as $.Toybox.Lang.Number, data as Null or $.Toybox.Lang.Dictionary or $.Toybox.Lang.String, context as $.Toybox.Lang.Object) as Void)>'.

The definition of my callback function looks like this:

function onReceiveData(responseCode as Lang.Number, data as Lang.String) as Void {

....

}

Does anyone see what is wrong?

0 trudelta over 2 years ago

OK I solved it. I needed to include all 3 type options for the data parameter in the callback function declaration

0 1068620 over 1 year ago in reply to trudelta

Hello, can you please give an example of the final function? Im a newbie here and im struggling

0 FlowState over 1 year ago in reply to 1068620

I think something like this should work:

function onReceiveData(
  responseCode as Lang.Number,
  data as Null or Lang.String or Lang.Dictionary
 ) as Void {
....
}