Set property to undefined in QML

[Developer123]

Hello,

I'd like to initialize a property to undefined, to indicate that the property has not been set yet (and check this later):

property real somevar: undefined

However, I get the error:

Unable to assign [undefined] to double

Any way to do this? Otherwise I need to create an extra variable somevarInitialized to know if it has been initialized already, and this seems counter productive. In javascript, one can just assign undefined freely.

[KroMignon]

@Developer123 said in Initialize property to undefined:

In javascript, one can just assign undefined freely.

AFAIK, you cannot set primary typed properties (like int, real) to undefined. I don't know anymore where I found this.
If you want to use undefined you have to use var as property type:

property var somevar: undefined

[Developer123]

@KroMignon Perfect, thanks!