Android Question Warning #3 in a Sub

Massy · Aug 23, 2014

I have this Sub I found in the forum that makes me find the number of days passed between 2 dates:

B4X:

Sub DaysBetweenDates(Date1 As Long, Date2 As Long)
  Return Floor((Date2 - Date1) / DateTime.TicksPerDay)
End Sub

it works all fine but I get a warning: "Return type (in Sub signature) should be set explicitly. (warning #3)"
Anyone knows what is it about and how to fix it?
Thanks for any help
Massy

NJDude · Aug 23, 2014

You can ignore that, if you like you can change the signature of that sub like this:

B4X:

Sub DaysBetweenDates(Date1 As Long, Date2 As Long) As Double

or just prevent that warning for showing by doing this:

B4X:

Sub DaysBetweenDates(Date1 As Long, Date2 As Long) 'ignore

Erel · Aug 24, 2014

If you don't explicitly set the return type then it is considered to be string. The compiler will convert the number to string and back to a number for you. However it is better to correctly set the type instead.

Massy · Aug 30, 2014

NJDude said:
You can ignore that, if you like you can change the signature of that sub like this:

B4X:

Sub DaysBetweenDates(Date1 As Long, Date2 As Long) As Double

Thanks a lot Dude! Sorry for the late answer but I was out of town...
Thanks again
Massy

Android Question Warning #3 in a Sub

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