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author | Simon Ochsenreither <simon@ochsenreither.de> | 2012-10-08 03:45:26 +0200 |
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committer | Simon Ochsenreither <simon@ochsenreither.de> | 2012-10-12 17:18:42 +0200 |
commit | 18c6d58a5dc994ce19b0419c7c2dce460acecbdd (patch) | |
tree | b2a909bdca9e376a636907aca821435d5b101f8b /src/library | |
parent | 3b73e0dd101aade6478517016df80975e6b996bd (diff) | |
download | scala-18c6d58a5dc994ce19b0419c7c2dce460acecbdd.tar.gz scala-18c6d58a5dc994ce19b0419c7c2dce460acecbdd.tar.bz2 scala-18c6d58a5dc994ce19b0419c7c2dce460acecbdd.zip |
SI-6388 Remove Application
Diffstat (limited to 'src/library')
-rw-r--r-- | src/library/scala/Application.scala | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/src/library/scala/Application.scala b/src/library/scala/Application.scala deleted file mode 100644 index 5b1098bd72..0000000000 --- a/src/library/scala/Application.scala +++ /dev/null @@ -1,79 +0,0 @@ -/* __ *\ -** ________ ___ / / ___ Scala API ** -** / __/ __// _ | / / / _ | (c) 2002-2011, LAMP/EPFL ** -** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ ** -** /____/\___/_/ |_/____/_/ | | ** -** |/ ** -\* */ - -package scala - -import scala.compat.Platform.currentTime - -/** The `Application` trait can be used to quickly turn objects - * into executable programs, but is ''not recommended''. - * Here is an example: - * {{{ - * object Main extends Application { - * Console.println("Hello World!") - * } - * }}} - * Here, object `Main` inherits the `main` method of `Application`. - * The body of the `Main` object defines the main program. This technique - * does not work if the main program depends on command-line arguments - * (which are not accessible with the technique presented here). - * - * It is possible to time the execution of objects that inherit from class - * `Application` by setting the global `scala.time` - * property. Here is an example for benchmarking object `Main`: - * {{{ - * java -Dscala.time Main - * }}} - * In practice the `Application` trait has a number of serious pitfalls: - * - * - Threaded code that references the object will block until static - * initialization is complete. However, because the entire execution - * of an `object` extending `Application` takes place during - * static initialization, concurrent code will ''always'' deadlock if - * it must synchronize with the enclosing object. - * - As described above, there is no way to obtain the - * command-line arguments because all code in body of an `object` - * extending `Application` is run as part of the static initialization - * which occurs before `Application`'s `main` method - * even begins execution. - * - Static initializers are run only once during program execution, and - * JVM authors usually assume their execution to be relatively short. - * Therefore, certain JVM configurations may become confused, or simply - * fail to optimize or JIT the code in the body of an `object` extending - * `Application`. This can lead to a significant performance degradation. - * - * It is recommended to use the [[scala.App]] trait instead. - * {{{ - * object Main { - * def main(args: Array[String]) { - * //.. - * } - * } - * }}} - * - * @author Matthias Zenger - * @version 1.0, 10/09/2003 - */ -@deprecated("use App instead", "2.9.0") -trait Application { - - /** The time when the execution of this program started, - * in milliseconds since 1 January 1970 UTC. */ - val executionStart: Long = currentTime - - /** The default main method. - * - * @param args the arguments passed to the main method - */ - def main(args: Array[String]) { - if (util.Properties propIsSet "scala.time") { - val total = currentTime - executionStart - Console.println("[total " + total + "ms]") - } - } -} |