WARNING: Cannot determine if container access is using container type

Hello brains trust,

Need some help please. I receive the compiler warning "Cannot determine if container access is using container type" when using STRICT type checking on the following excerpt of code. Mind you, the code still runs.

BUT, I can't figure out how to eliminate the warning (it's messing with my OCD). What am I missing?

function test() as Void {
	var w = null, ti, sz = 6;

	w = Weather.getHourlyForecast();
	if (w != null) {
		for (var j=0; j<sz; j++) {
			ti = Gregorian.info((w[j].forecastTime as Moment), (Time.FORMAT_LONG as DateFormat));
		    // ... more code follows, but irrelevant for this illustration
		}
	}	

}

Top Replies

el34rob over 2 years ago +1
Sigh.... Worked it out.... umb-da.

Key change:

w = Weather.getHourlyForecast() as Array<HourlyForecast>;
```
function test() as Void{
	var w, ti, sz = 6;

	w = Weather.getHourlyForecast() as Array…
```

All Replies

akamming 2 months ago in reply to flocsy

But levels is a Local var, on which I cannot define which type is. (It is a string btw)

so don’t know how fix that…

flocsy 2 months ago in reply to akamming

so that's the problem. You can't get the nth character of a string this way. You'll need to use toCharArray() developer.garmin.com/.../String.html

akamming 2 months ago in reply to flocsy

I am not trying to get the nth charactar of a String. Levels is an array of strings, and I try to get the nth string from the array

Anyway i fixed it by adding "as Lang.Array<Lang.String>" to the function which populates the Levels array.

tx for the help!

akamming 2 months ago in reply to flocsy

again..tx for all the help. I now solved a lot of these warnings (recompiling an old piece of code ;-))

There is are just several warnings left on 2 arrays i cannot find a way to fix: The arrays are om public var in a container, declared as

public var roomItems as Lang.Dictionary<Lang.Number,WatchUi.MenuItem> = {}; // will contain the objects with the menu items of the rooms

public var deviceItems as Lang.Dictionary<Lang.Number,DomoticzIconMenuItem or DomoticzToggleMenuItem> = {}; // will contain the objects with the menu items of the devices

and now for everytime this array is called for whatever reason i get the compiler warning. These are statements like:

menu.addItem(dz.roomItems[key]);

_dz.roomItems[currentid].setSubLabel(WatchUi.loadResource(Rez.Strings.STATUS_LOADING_DEVICES));

menu.addItem(_dz.deviceItems[key]);

_dz.roomItems[currentid].setSubLabel(null);

The code works fine though, but i just want to get rid of these compiler warnings...

flocsy 2 months ago in reply to akamming

What type does addItem expect? I guess it's either DomoticzIconMenuItem or DomoticzToggleMenuItem but not both and your deviceItems is declared as it contains both types.

akamming 2 months ago in reply to flocsy

It is both. Device with a switch capability are shown as a togglemenuitem in the menu. Other devices e.g sensors Will be presented with a custom item (e.g. A temperature sensor)

Seli17 19 days ago in reply to akamming

Hi, I can not figure out how I have to read from an array, it gives always a warning:

var myElapsedTime = 0;
var diffTime = 0;
var arrMilliseconds = new Lang.Array<Lang.Number>[60];

// does Cannot determine if container access is using container type.
diffTime = myElapsedTime - arrMilliseconds[myActualSecond];
diffTime = myElapsedTime - (arrMilliseconds[0] as Number);

flocsy 19 days ago in reply to Seli17

var arrMilliseconds as Lang.Array<Lang.Number> = new Lang.Array<Lang.Number>[60];

Seli17 17 days ago in reply to flocsy

Thanks, that helped

Seli17 17 days ago in reply to Seli17

function FillPolygon(dc, sx, sy, dx, dy, theta, points) {
  		theta = theta /360.0 * 2 * Math.PI;
		var sin = Math.sin(theta);
		var cos = Math.cos(theta);
		
		var coords = new [points.size()];
		for (var i = 0; i < points.size(); ++i) {
		
		// make a copy so as to not modify the points array
		coords[i] = [ points[i][0] * sx, points[i][1] * sy ];
		
		var x = (coords[i][0] * cos) - (coords[i][1] * sin) + dx;
		var y = (coords[i][0] * sin) + (coords[i][1] * cos) + dy;
		
		coords[i][0] = x;
		coords[i][1] = y;
		}

		dc.fillPolygon(coords);
	}

Same problem above on line 10-16:
I could not figure out how to avoid the warning message "container"