Is there a Pattern in Scala that add a method to an Array object?

As long as you avoid name collisions with any other implicit on Array (e. G ArrayOps in 2.8, which adds the collections methods), you can extend using the normal implicit pimp-my-library pattern.

As long as you avoid name collisions with any other implicit on Array (e.g. ArrayOps in 2.8, which adds the collections methods), you can extend using the normal implicit pimp-my-library pattern: class FooArrayT(at: ArrayT) { def foo() = at. Length*at. Length } implicit def array2fooT(at: ArrayT) = new FooArray(at) scala> Array(1,2,3).

Foo res2: Int = 9.

Implicit conversions are not prevented by the final-ness of the input class. String, for example, has an implicit conversion to RichString (Scala 2.7) or StringOps (Scala 2.8). So you're free to define implicit conversions for Array with one key caveat: You must forgo Scala's built-in implicit conversion from Array to ArrayOps (in Scala 2.8 only).

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