Test if first element in a map traversal?

Question

Is it possible to test to see how many times you've already looped over the map?

Something like the following:

@item.itemImgs.map { img =>
    @if(img._1) {
        <html stuff>
    }
}

The above is the Play Framework templating engine in a *.scala.html document.

score 2 · Accepted Answer · edited Aug 31 '14 at 20:31

2

You can use zipWithIndex and get the element index, with that you know how many times you have mapped the collection, note that it's zero index based:

scala> List(1,2,3,4).zipWithIndex.map { case (e,i) => println(i + ": " + e ) }
0: 1
1: 2
2: 3
3: 4

edited Aug 31 '14 at 20:31

om-nom-nom

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answered Aug 31 '14 at 20:27

Ende Neu

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Test if first element in a map traversal?

1 Answers1