Iterate manually inside TraversableOnce

[Fernando Pelliccioni]

Hello!

I am new to the forum and to Scala. 

Excuse me in advance if I ask an obvious question.

I was looking at the following code: 

https://github.com/scala/scala/blob/v2.12.0/src/library/scala/collection/TraversableOnce.scala#L178

  def reduceLeft[B >: A](op: (B, A) => B): B = {

    if (isEmpty)

      throw new UnsupportedOperationException("empty.reduceLeft")

    var first = true

    var acc: B = 0.asInstanceOf[B]

    for (x <- self) {

      if (first) {

        acc = x

        first = false

      }

      else acc = op(acc, x)

    }

    acc

  }

And I was wondering if it is possible to iterate manually, using next() and hasNext (instead of using for( <-)), in the context of TraversableOnce.

Thanks and regards,

Fernando Pelliccioni.

[Sébastien Doeraene]

Hello,

Looks like a question for scala-user (https://groups.google.com/forum/#!forum/scala-user) instead.

Cheers,

Sébastien

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[Fernando Pelliccioni]

Oh Sorry!

Thanks!