Let's assume we have a polyline called poly and we want to read all
vertices.
I found the following solution in one the libraries:

 var path = poly.getPath();
 var points = new Array(path.getLength());

 for (var i = 0; i < points.length; i++) {
  path.getAt(i);
 }


This seems to be a good solution and it works very well. But it seems
a bit weird to copy the length of the MVCArray and take the copy to
iterate through the original MVCArray.. So I wonder why to make this
detour?

Another, slightly shorter, solution seems to be the following:

 for (var i = 0; i < path.getLength(); i++) {
  path.getAt(i);
 }

Again a well working solution but again a detour. So I wonder why
nobody seems to use forEach()?

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