Inline implementation

Scala Community,

How do I do an inline implementation of a Java (or Scala) interface?  For example, in Scala I am currently using a workaround like this:

object myRunnable extends Runnable {
      def run = println("started")
    }
    SwingUtilities.invokeLater(myRunnable)

Whereas in Java I would normally do something like this:

SwingUtilities.invokeAndWait( new Runnable() {
                public void run() {
                    System.out.println( "started" );
                }
            } );

I'd like to get rid of the temporary variable myRunnable in the first example, please let me know what you think.

Thanks,
Sam Reid

443b2f9d0901051930j5ec4e6bar2c19893787d6adaf [at] mail [dot] gmail [dot] com" type="cite">object MySwingUtilities {
  def invokeLater[X](exp : => X) {
    import javax.swing.SwingUtilities
   
    SwingUtilities invokeLater (new Runnable() {
      def run = exp
    })
  }
}

object Test {
  MySwingUtilities invokeLater {println("started")}
}

On Mon, Jan 5, 2009 at 7:18 PM, Samuel Robert Reid <Reids [at] colorado [dot] edu" rel="nofollow">Reids@colorado.edu> wrote:

Scala Community,

How do I do an inline implementation of a Java (or Scala) interface?  For example, in Scala I am currently using a workaround like this:

object myRunnable extends Runnable {
      def run = println("started")
    }
    SwingUtilities.invokeLater(myRunnable)

Whereas in Java I would normally do something like this:

SwingUtilities.invokeAndWait( new Runnable() {
                public void run() {
                    System.out.println( "started" );
                }
            } );

I'd like to get rid of the temporary variable myRunnable in the first example, please let me know what you think.

Thanks,
Sam Reid

Thanks for your prompt response, this is an elegant solution.

Sam Reid

James Iry wrote:

object MySwingUtilities {
  def invokeLater[X](exp : => X) {
    import javax.swing.SwingUtilities
   
    SwingUtilities invokeLater (new Runnable() {
      def run = exp
    })
  }
}

object Test {
  MySwingUtilities invokeLater {println("started")}
}

On Mon, Jan 5, 2009 at 7:18 PM, Samuel Robert Reid <Reids@colorado.edu> wrote:

Scala Community,

How do I do an inline implementation of a Java (or Scala) interface?  For example, in Scala I am currently using a workaround like this:

object myRunnable extends Runnable {
      def run = println("started")
    }
    SwingUtilities.invokeLater(myRunnable)

Whereas in Java I would normally do something like this:

SwingUtilities.invokeAndWait( new Runnable() {
                public void run() {
                    System.out.println( "started" );
                }
            } );

I'd like to get rid of the temporary variable myRunnable in the first example, please let me know what you think.

Thanks,
Sam Reid

Or simply:

implicit def fun2Run[T](x: => T) : Runnable = new Runnable() { def run = x }

SwingUtilities invokeLater println("hoho")



On Tue, Jan 6, 2009 at 4:32 AM, Samuel Robert Reid <Reids@colorado.edu> wrote:

Thanks for your prompt response, this is an elegant solution.

Sam Reid

James Iry wrote:

object MySwingUtilities {
  def invokeLater[X](exp : => X) {
    import javax.swing.SwingUtilities
   
    SwingUtilities invokeLater (new Runnable() {
      def run = exp
    })
  }
}

object Test {
  MySwingUtilities invokeLater {println("started")}
}

On Mon, Jan 5, 2009 at 7:18 PM, Samuel Robert Reid <Reids@colorado.edu> wrote:

Scala Community,

How do I do an inline implementation of a Java (or Scala) interface?  For example, in Scala I am currently using a workaround like this:

object myRunnable extends Runnable {
      def run = println("started")
    }
    SwingUtilities.invokeLater(myRunnable)

Whereas in Java I would normally do something like this:

SwingUtilities.invokeAndWait( new Runnable() {
                public void run() {
                    System.out.println( "started" );
                }
            } );

I'd like to get rid of the temporary variable myRunnable in the first example, please let me know what you think.

Thanks,
Sam Reid

--
Viktor Klang
Senior Systems Analyst

You can omit the ().  new Runnable { def run = x }

2009/1/6 Viktor Klang <viktor.klang@gmail.com>

Or simply:

implicit def fun2Run[T](x: => T) : Runnable = new Runnable() { def run = x }

SwingUtilities invokeLater println("hoho")



On Tue, Jan 6, 2009 at 4:32 AM, Samuel Robert Reid <Reids@colorado.edu> wrote:

Thanks for your prompt response, this is an elegant solution.

Sam Reid

James Iry wrote:

object MySwingUtilities {
  def invokeLater[X](exp : => X) {
    import javax.swing.SwingUtilities
   
    SwingUtilities invokeLater (new Runnable() {
      def run = exp
    })
  }
}

object Test {
  MySwingUtilities invokeLater {println("started")}
}

On Mon, Jan 5, 2009 at 7:18 PM, Samuel Robert Reid <Reids@colorado.edu> wrote:

Scala Community,

How do I do an inline implementation of a Java (or Scala) interface?  For example, in Scala I am currently using a workaround like this:

object myRunnable extends Runnable {
      def run = println("started")
    }
    SwingUtilities.invokeLater(myRunnable)

Whereas in Java I would normally do something like this:

SwingUtilities.invokeAndWait( new Runnable() {
                public void run() {
                    System.out.println( "started" );
                }
            } );

I'd like to get rid of the temporary variable myRunnable in the first example, please let me know what you think.

Thanks,
Sam Reid

--
Viktor Klang
Senior Systems Analyst