10.3. Using Objects for Named Arguments

As you learned in Chapter 3, "Methods and Functions," ActionScript 3.0 gives you added flexibility when passing parameters to functions. You can leave out arguments with default values, and you can accept variable-length argument lists with the ...rest parameter. Every so often it might be necessary for a function to accept more than a handful of possible arguments, in which case identifying the argument's intention from its position in the argument list alone can be a memory exercise.

For example, the following code sets a particular line style in preparation to draw some strokes on a Sprite: