axis as function

[daenenk]

In javascript axis as-is can be used as a function.
In scala this is supported by the apply functions.

trait Axis extends js.Any { 
 def apply(selection: Selection[js.Any]): Unit = js.native
 def apply(selection: Transition[js.Any]): Unit = js.native

However this makes it hard to pass an axis as argument to the selection.call() function,
as in e.g. from Simple d3.js Graph

svg
   .append("g")
   .attr("class", "x axis")
   .call(xAxis)

I suggest the following:

trait Axis extends js.Function1[ Selection[js.Any] | Transition[js.Any], Unit] 

[spaced]

Tnx for feedback, Several other traits are functions too. Need to check it too.

[daenenk]

Works fine now! thx