Scala XML Building: Adding children to existing Nodes

Question

I Have an XML Node that I want to add children to over time:

val root: Node = 

But I cannot see methods such as

Answer 1

your root definition is actually an Elem object, a subclass of node, so if you drop your unnecessary Node typing (which hides its implementation) you could actually do a ++ on it since the Elem class has this method.

val root = 
val myChild = 
root.copy(child = root.child ++ myChild)

scala ev:

root: scala.xml.Elem = 
myChild: scala.xml.Elem = 
res2: scala.xml.Elem = 

Since every Elem and every Node is a NodeSeq you can add these pretty effectively even if what you are appending is an unknown sequence:

val root = 
//some node sequence of unknown subtype or structure
val children: scala.xml.NodeSeq =  
root.copy(child = root.child ++ children)

scala ev:

root: scala.xml.Elem = 
children: scala.xml.NodeSeq = NodeSeq(, )
res6: scala.xml.Elem =