Example of the loan pattern in Scala

loanpattern.scala

/**
  * here we're going to test the loan pattern using something we do all the time, iterate over files and work with
  * the lines in those files. Java makes it a pain the arse to just read simple lines in a file, lots of set up
  * code and resource management. The nice part of this pattern is once you create that set up code once you can
  * use a nice clean API like the one seen below.
  * You can see here we're passing in a function to "withFileIterator that accepts a "line" string, we then can
  * work on that line string freely and the resource will be closed in a finally block behind the scenes.
  */
  @Test
  def loanPatternWithFileIterator() {


    val myfilename = "/var/log/secure.log"
    LoanPattern.withFileIterator(myfilename) {
      line => {
        println(line)
      }
    }
  }