This post originated from an RSS feed registered with Scala Buzz by Daniel Sobral. Original Post: String interpolation in Scala with Regex Feed Title: Algorithmically challenged Feed URL: http://dcsobral.blogspot.com/feeds/posts/default Feed Description: Random thoughts of an IT worker in the stone age of computer science. Latest Scala Buzz Posts Latest Scala Buzz Posts by Daniel Sobral Latest Posts From Algorithmically challenged

def interpolate(text: String, vars: Map[String, String]) =
  """\$\{([^}]+)\}""".r.replaceAllMatchDataIn(text, { 
    case Regex.Groups(v) => vars.getOrElse(v, "") 
  })

scala> "The ${name} of the ${game}"
res0: java.lang.String = The ${name} of the ${game}

scala> Map("name" -> "X", "game" -> "Y")
res1: scala.collection.immutable.Map[java.lang.String,java.lang.String] = Map(name -> X, game -> Y)

scala> interpolate(res0, res1)
res2: String = The X of the Y