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2,446 Points2:53 When he calls the variable _location
2:53 When he calls the variable _location, he doesn't use the underscore. This is not necessary for the program to know where he's trying to call it from?
2 Answers
Steven Parker
231,198 PointsThe "location
" (no underscore) property provides public access to the private field "_location
" (with underscore) field inside the class. The property uses the get and set methods to provide access to the field.
Daniel Crittenden
9,308 PointsIf you tried to use _location
, it would be out of scope -- the computer could not access the variable directly from the Main() method.
_location
is a private field that is only accessible within the Invader class, specifically by the getter and setter methods. So, in order to access to access _location
from Game.cs, you'd actually type invader.Location
(or invader.GetLocation()
if the applicable getter method was setup).
The location
variable the presenter uses on Game.cs was a different one. It is a MapLocation
object that was instantiated on line 27 of Game.cs.