Useful code snippet to use when parsing large files in the Scala REPL

ParseLines.scala

import scala.io.Source
def parseLines[T](file: String, transform: (Iterator[String]) => T): T = {
    val log = Source.fromFile(file)
    val logLines = log.getLines()
    try { transform(logLines) } finally { log.close }
}
// Example usage.
// parseLines("verybigfile.txt", iterator.take(100).foreach(println))