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kelake
4,223 PointsWhy this initializer method?
I'm not clear why we are using:
init(x: Int, y: Int) {
self.position = Point(x: x, y: y)
}
versus
init(position: Point) {
self.position = position
}
Can anyone explain this clearer than the video?
1 Answer
Simon Di Giovanni
8,429 PointsSure!
So first of all , ‘Point’ is a struct. It has two variables, x and y.
To create an instance of Point, you need to assigned values to ‘x’ and ‘y’
So, to initialise this, you need to ask the user to put in values for ‘x’ and ‘y’
Then, the compiler can create an instance of ‘Point’. Now that an instance of ‘Point’ has been been created, it can now be assigned to ‘position’
Think of it this way - if you were the one initializing ‘Point’, how can you type in a struct that has two values? You can’t. So you need to do each one individually (x and y)
If this still doesn’t make sense please let me know!