libs/App.php
/**
     * App initialization, set default action.
     */
App initialization, set default action.
App initialization set default action .
protected function initialize()
    {
        $this->setDefaultAction(function() {
            $this->printHelp();
        });
    }
protected function initialize ( ) { $ this -> setDefaultAction ( function ( ) { $ this -> printHelp ( ) ; } ) ; }
App initialization, set default action.
App initialization set default action .
// Set default action