How can I make custom toString for Array?

I want to be able to write:

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val a = Array(1,2,3)
println(a.toString)

And have a meaningfull printout. Is it possible?

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You have to do this:

scala> val a = Array(1, 2, 3)
a: Array[Int] = Array(1, 2, 3)

scala> println(a.deep)
Array(1, 2, 3)

scala>