Re: This sort of thing might push me to Scala

Even with your code been punished by Java verbosity, I still think your new aproach is much better than the old one. In the old one you had to duplicate the code to disable the waiting cursor 4 times, with all the dangers associated with duplication. I also think then intent is clearer in the new aproach.

Regards

--- El jue 17-dic-09, Gordon Milne <[email protected]> escribió:

De: Gordon Milne <[email protected]>
Asunto: [pragprog] This sort of thing might push me to Scala
A: [email protected]
Fecha: jueves, 17 diciembre, 2009, 7:48 pm







 



  


    
      
      
      Hi!



I have 4 methods that have code like this in them:



final LsWaitingCursor waitingCursor = new LsWaitingCursor( frame);

    try {

        new MethodEditor( title, file);

    }

    finally {

        waitingCursor. disable() ;

    }



The only thing difference between the 4 methods is the code in the try

block. That piece of code is always a single statement. What I really

want to write is this:



runWithWaitCursor { new MethodEditor( title, file) }



Since I work in Java, I settled for this:



runWithWaitCursor( runnable) .



The only problem is that this code is just as verbose and

boiler-plated as before, since I end up writing:



runWithWaitCursor( new Runnable()

    {

       public void run()

       {

           new MethodEditor( title, file);

       }

    });



How many lines of code did I just save? Zero and I now have another

method (runWithWaitCursor) which also has 7 lines of code in it. So my

neat idea hasn't reduced my verbosity. It has increased it! And now I

have an extra 7 lines of code in runWithWaitCursor( ).



The only benefit I did gain was that I separated out the execution of

a task (e.g. new MethodEditor( )) from a change in the appearance of

the cursor (i.e. waiting/normal) .



It doesn't seem like a big enough benefit to me.



So, I'm going to revert this change. And dig deeper into the

Odersky/Spoon/ Venners book.



regards,



Gordon J Milne

------------ --

I struggle because it's good for me!



    
     

    
    


 



  






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