Creating a method which takes any 2D sequence and turns it into an Array[Array[_ in Scala?

Okay finally got something clean and simple which requires no new implicits, though this is sort of inefficient since it converts away from array to Seq just so it can convert back again. Or you can use one implicit to stay with arrays.

An important part of your problem is that Array is implicitely convertible to Seq, but isnot a Seq (defined in the JVM, too late to add ancestors now).

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