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In this video how is count updating when you add?
How is count updating every time he adds, in the constructor he sets .__count = 0, and that's it... does it have something to do with the double underscores?
Steven Parker218,860 Points
This seems like a bug. You can report it to the staff as described on the Support page.
But also note that the code shown in the video (and in the project file download) is significantly different in that it both creates and increments "count" (with no underscores) in the "size" method.