On Wednesday 04 Apr 2012 22:39:21 Matthew Toseland wrote:
> On Wednesday 04 Apr 2012 20:31:42 Florent Daigniere wrote:
> > On Wed, Apr 04, 2012 at 12:58:55PM -0300, Marco Schulze wrote:
> > > On 04-04-2012 11:43, Zlatin Balevsky wrote:
> > >>
> > >> The problem of abusing the predicate by performing anything other than  
> > >> logging inside it.
> > >>
> > > I guess that that does improve readability a bit. However, less than 5%  
> > > of the ifs guards anything but Log.*() calls.
> > >
> > >> You cannot get rid of the predicate without introducing side effects  
> > >> as I've demonstrated throughout this thread.
> > >>
> > > By removing the predicate and delegating checks to the logging function,  
> > > a _lot_ of boilerplate code is removed. Ideally, as toad said, Java  
> > > would have some kind macro system enabling the best of both worlds.  
> > > Lacking that, the question becomes: 'is the overhead acceptable?'.
> > >
> > > There have been quite a lot of arguments thrown here. In the end,  
> > > though, as fred is big and complex, the only answer is to write some  
> > > code and actually run the thing. Are varargs bad? Sure. Is the slowdown  
> > > unacceptable? No idea. Just bear with my slowness (or do help), and  
> > > you'll at least have a convincing argument for the next fool in the line.
> > >
> > 
> > You're the one who should try to convince us to merge your jumbo patch...
> > 
> > If your proposed solution is not faster than the existing code, you'd
> >  better come up with a solid and representative benchmark showing that
> >  the difference is not significant. If your 'solution' is trading 'jar
> >  size' and 'readability' against run-time performance (for the common
> >  case assuming logNORMAL), we won't merge it. Freenet is slow enough
> >  as is.
> > 
> > Hint: your doing it wrong, the one way to make it faster and nicer is to
> >  use dependancy injection
> 
> You mean patching the bytecode at load time? That's an interesting idea, 
> what's the overhead likely to look like?
> 
I think db4o includes a library for doing such things ... so we may not even 
need any new dependancies for it.

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