Question

If you have something like:

val myStuff = Array(Person('joe',40), Person('mary', 35)) 

How do you create an XML value with that data as nodes? I know how to use { braces } in an XML expression to put a value, but this is a collection of values. Do I need to iterate explicitly or is there something better?

val myXml = <people>{ /* what here?! */ }</people> 

The resulting value should be something like:

<people><person><name>joe</name><age>40</age></person> <person><name>mary</name><age>39</age></person></people> 

Answer 1

As it’s a functional programming language Array.map is probably what you’re looking for:

class Person(name : String, age : Int){     def toXml() = <person><name>{ name }</name><age>{ age }</age></person> }  object xml {     val people = List(         new Person('Alice', 16),         new Person('Bob', 64)     )      val data = <people>{ people.map(p => p.toXml()) }</people>      def main(args : Array[String]){         println(data)     } } 

Results in:

<people><person><name>Alice</name><age>16</age></person><person><name>Bob</name><age>64</age></person></people> 

A formatted result (for a better read):

<people>    <person>       <name>Alice</name>       <age>16</age>    </person>    <person>       <name>Bob</name>       <age>64</age>    </person> </people>