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Changes for page WebObjects with Scala

Last modified by Ravi Mendis on 2011/05/10 02:10
From version 466.1
edited by Ravi Mendis
on 2010/12/24 00:37
Change comment: There is no comment for this version
To version 469.1
edited by Ravi Mendis
on 2010/12/24 00:43
Change comment: There is no comment for this version

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44 44  Scala doesn't have static variables or methods. Instead Scala employs the [[Singleton Pattern>>http://en.wikipedia.org/wiki/Singleton_pattern]] which is built into the language and is **thread-safe**: a class can have a //Companion Object// that will allow you to achieve something equivalent to static variables - but better.
45 45  
46 46  You don't have to worry about synchronizing access to shared mutable fields in a concurrent application.
47 -This is not however true for mutable ##val## e.g: ##NSMutableArray##, ##scala.collection.mutable.ListBuffer## which you will have to synchronize the adding to or removing from.
47 +(This is not however true when for example you have a ##val## declared as a ##NSMutableArray##. You will still have to synchronize when adding to or removing from this mutable field).
48 48  
49 49  The following is an example of the use of a //Companion Object// for Talent in Scala instead of Talent static fields in Java.
50 50  
... ... @@ -198,16 +198,10 @@
198 198  
199 199  After that, you may access the typical Scala collection methods directly on NSArray.  This employs a feature of Scala known as implicit conversions to automagically cast a NSArray (a Java Iterable) into a Scala Iterable while leaving the actual object unchanged.  Alternatively, you could generate an actual new scala.List instance by calling myNSArray.toList.
200 200  
201 -== How to Add Scala to a WO Project ==
201 +== How to Add Scala to a WO Project (in Eclipse) ==
202 202  
203 203  {{include value="WOL:Adding Scala Support to a WOLips Project"}}{{/include}}
204 204  
205 -{{note}}
206 -
207 -This is for Eclipse/WOLips IDE
208 -
209 -{{/note}}
210 -
211 211  == WO Scala Example ==
212 212  
213 213  The following example is an almost 100% Scala WO app. In reality it is a mixed Java/Scala app: