App
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package scala
The command line arguments passed to the application's main method.
The command line arguments passed to the application's main method.
The main method.
The main method.
This stores all arguments so that they can be retrieved with args
and then executes all initialization code segments in the order in which
they were passed to delayedInit.
the arguments passed to the main method
The init hook.
The init hook. This saves all initialization code for execution within main.
This method is normally never called directly from user code.
Instead it is called as compiler-generated code for those classes and objects
(but not traits) that inherit from the DelayedInit trait and that do not
themselves define a delayedInit method.
the initialization code to be stored for later execution
(Since version 2.11.0) The delayedInit mechanism will disappear.
The
Apptrait can be used to quickly turn objects into executable programs. Here is an example:Here, object
Maininherits themainmethod ofApp.argsreturns the current command line arguments as an array.Caveats
It should be noted that this trait is implemented using the DelayedInit functionality, which means that fields of the object will not have been initialized before the main method has been executed.
It should also be noted that the
mainmethod should not be overridden: the whole class body becomes the "main method".Future versions of this trait will no longer extend
DelayedInit.2.1, 15/02/2011