This project is an attempt to provide an Automatic-Resource-Management library for the scala distribution. It is based off of code contributed to the Scalax project.

In SBT:

libraryDependencies += "com.jsuereth" %% "scala-arm" % "1.2"

In Maven:

<dependency>
   <groupId>com.jsuereth</groupId>
   <artifactId>scala-arm_${scala.version}</artifactId>
   <version>1.2</version>
</dependency>

Scala-arm provides many ways of managing resources and re-using code. Here's a few examples.

import resource._
// Copy input into output.
for(input <- managed(new java.io.FileInputStream("test.txt"));
    output <- managed(new java.io.FileOutputStream("test2.txt"))) {
  val buffer = new Array[Byte](512)
  def read(): Unit = input.read(buffer) match {
    case -1 => ()
    case  n => output.write(buffer,0,size); read()
  }
  read()
}

import resource._
import java.io.{File, FileInputStream => Fin, FileOutputStream => Fout}
def copyFile(from: File, to: File): Unit =
  withResources {
    val f = managed(new Fin(from)).reflect[Unit]
    val t = managed(new Fout(to)).reflect[Unit]
    val buffer = new Array[Byte](512)
    def read(): Unit = f.read(buffer) match {
      case -1 => ()
      case  n => t.write(buffer,0,n); read()
    }
    read()
}

For more information on usage, see Usage

Copyright (c) 2002-2009 EPFL, Lausanne, unless otherwise specified. All rights reserved.

This software was developed by the Programming Methods Laboratory of the Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland.

Permission to use, copy, modify, and distribute this software in source or binary form for any purpose with or without fee is hereby granted, provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. Neither the name of the EPFL nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

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