CODEWITHSUNDEEP
scalaarraylist
Haisam Tarek Elkewidy
Haisam Tarek Elkewidy

Reputation: 107

Arrays.asList() in Scala

Is there an equivalent to Arrays.asList() in Scala?

Or rather, how would you take a String and convert it into an Array, and then a List in Scala?

Any advice would be appreciated.

Upvotes: 1

Views: 3863

Answers (1)

Alexey Romanov
Alexey Romanov

Reputation: 170899

One common use of Arrays.asList is to produce a list containing the given elements:

Arrays.asList(x, y, z);

The Scala equivalent to that is just

Seq(x, y, z)

The other is to turn an existing array into list:

Arrays.asList(array);

In Scala, this is

array.toSeq

(note that I use Seq instead of List here; in Scala, List is a specific implementation, not an interface. Depending on what you want to do with it, some other type can be appropriate).

Or in many cases, nothing at all. Because Array[A] is implicitly convertible to IndexedSeq[A], collection operations can be done directly on it without converting first.

The same applies to String, with a caveat that operations Lists are good at are quite uncommon for strings, so string.toList is even less likely to be appropriate.

Upvotes: 4

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