Question

Is there any way to generate XML using the literal syntax as such:

<a>
{
  for (i <- Range(1, 3)) yield {
    <b>{i}</b>
  }
}
</a>

that will return

<a><b>1</b><b>2</b></a>

i.e. I want to use just a single compound statement which will somehow return the complete XML literal.

The only way I know is to do it in two steps: in the first step the for-yield statement will return IndexedSeq or something similiar which then in the second step I have to convert it to scala.xml.Elem. That’s OK, but I get the feeling that you can be more concise – nearly as concise as what I proposed in my code above.

Thanks.

Answer 1

What you posted works just fine…

If you want it to be more concise in terms of typing, you could use an inner statement of

(1 to 3).map{i => <b>{i}</b>}
//or
for(i<-1 to 3) yield <b>{i}</b>

So then you would just have this:

val xml = <a>{ (1 to 3).map{ i => <b>{i}</b> } }</a>

Which gives

xml: scala.xml.Elem = <a><b>1</b><b>2</b><b>3</b></a>