CODEWITHSUNDEEP
scala
sri hari kali charan Tummala
sri hari kali charan Tummala

Reputation: 1134

How does the distinct function work?

The Scala website doesn't show me how the actual distinct function of List works and there is no full signature of the function.

Is there a way to find the actual function signature or its definition ?

Upvotes: 0

Views: 576

Answers (1)

Peter Neyens
Peter Neyens

Reputation: 9820

The distinct function of List is defined in SeqLike.

You can find its distinct implementation on GitHub.

// Scala 2.11.7
def distinct: Repr = {
  val b = newBuilder
  val seen = mutable.HashSet[A]()
  for (x <- this) {
    if (!seen(x)) {
      b += x
      seen += x
    }
  }
  b.result()
}

Note that at the top of every ScalaDoc page (below the description), there is a link to the source file on GitHub.

Upvotes: 2

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