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Graham Atlee
3,907 PointsCan someone help break down bool OnMap(Point point) method?
I've been struggling with this concept. I'm not fully sure what's going on here.
Like why does point.X allow us to access that field from the Point class. I get that its a variable but how can a variable access another variable?
Overall I'm just confused with this whole method in general. I just need a better explanation.
2 Answers
Daniel Quaidoo
23,937 PointsHe has a good point. The use of point.X was not properly explained in the video.
The first thing to realise is that (Point point) is a class that you are referring to. But you are kind of using it as a type.
Then to the Point.X itself, it has to do with the dot operator. The documentation will probably explain this better than i can.
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/operators/member-access-operator
Steven Parker
229,732 PointsAn object is more than a variable. You might think of it as a box that can hold other things, including variables and functions. A method is essentially a function that is inside an object.
And the "X" part of "point.X" is simply a variable named "X" that is inside an object named "point".
Did that cover what you were asking? I wasn't sure I understood the question. If not, perhaps showing a bit more of the code would help.