Would It be possible to add the functionality off a stand alone function (so apart from a screen/control) to PowerApps.
The idea is to be able to use this stand alone function in a formula to validate or calculate. Example:
1) If(ValidateForm(parameter1, parameter2, parameter3), do something 1, do something 2)
In this case the ValidateForm is the stand alone function which returns a boolean.
2) CalculateNumber * 10
In this case the CalculateNumber is the stand alone function which returns a integer.
Reason: a stand alone function can reduce the length off a formula by many lines and a stand alone function could be reused on several screens.