Override with Wrong Argument Label?

[Redoubts]

I have a question about Classes/Highlight/HorizontalBarChartHighlighter.swift

In it, you try to override
public func getBase(x: Double) -> Double from BarChartHighlighter (link)
with
public override func getBase(y: Double) -> Double (link)

is it right to use y as the argument label, both semantically and as an override? Later you use it on an x value which makes me suspicious if this is a bug or not.

[liuxuan30]

I guess it's not - compiler just cares about the function name, parameter types and return types

[danielgindi]

@Redoubts you are confused - it is not the label of the argument. It's the local name of the argument.
The first argument does not have a label unless explicitly specified.