David, Thanks for the blog entry and it does a great job in explaining how Option works and how to use it.
May I suggest that we add a link to this blog post on Lift Wiki??? Correct me if I'm wrong but I think most newbie to Scala / Lift may wonder and puzzle how Box / Option works. I know you're very busy and with your permission, I'm willing to add this to the wiki Oh, and I think I really need to tweak my mind a bit and start to think in a more functional / scala way Cheers, Ferdinand On Nov 12, 6:55 am, David Pollak <[email protected]> wrote: > http://blog.lostlake.org/index.php?/archives/50-The-Scala-Option-clas... > > The for comprehension is your friend. > > > > > > On Wed, Nov 11, 2009 at 2:40 PM, Ferdinand Chan <[email protected]> wrote: > > > Wondering what's the normal practice of using a Box. As a Java > > developer, I always want to get the boxed value by a method named > > "Value" like > > > val optionalContent = Full("This is optional") > > > Log.info( " The optional content is " + optionalContent.value) > > > But I know its not a valid way to do so in lift ( same for Option in > > Scala) > > > From the book programming in Scala , there's an example > > > val withDefault: Option[Int] => Int = { > > case Some(x) => x > > case None => 0 > > } > > > which suggest the use of match to retrieve the value of the boxed > > content. It make sense to me and I'm totally agree with the advantage > > of using match + option (Box) combination. > > > However, as a newbie to Scala, I'm so tempted to use something > > like .Value to retrieve the box value . > > > So, what's the normal way to use Box ?? Could someone kindly provide > > some example on how to use ? I tried to look through some source code > > of Lift but its not easy for a newbie :) > > > Thanks > > -- > Lift, the simply functional web frameworkhttp://liftweb.net > Beginning Scalahttp://www.apress.com/book/view/1430219890 > Follow me:http://twitter.com/dpp > Surf the harmonics --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Lift" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~----------~----~----~----~------~----~------~--~---
