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Flat View: This topic has 18 replies on 2 pages [ « | 1 2 ]

Trond Olsen Posts: 14 Nickname: tolsen Registered: Mar, 2007 Re: Scala, Patterns and The Perl Effect Posted: Dec 25, 2011 9:55 AM Reply Advertisement Further extending the example with a catch-all clause: val f4: PartialFunction[Any,String] = { case _ => "undefined" } // f4: PartialFunction[Any,String] = <function1> val f5 = f3 orElse f4 // f5: PartialFunction[Any,String] = <function1> f5("a") // res3: String = undefined

Channing Walton Posts: 32 Nickname: channing Registered: May, 2003 Re: Scala, Patterns and The Perl Effect Posted: Dec 30, 2011 6:41 PM Reply Here is a another simple, concrete example. val root:PartialFunction[Int, Double] = { case x if x >=0 => math.sqrt(x) } val printIt:PartialFunction[Int, String] = { case i => "Root(" + i + ")"} val roots = root orElse printIt (-3 to 3) map (roots(_)) = Vector(Root(-3), Root(-2), Root(-1), 0.0, 1.0, 1.4142135623730951, 1.7320508075688772)

philippos papadatos Posts: 6 Nickname: firesoft Registered: Mar, 2012 Re: Scala, Patterns and The Perl Effect Posted: Mar 28, 2012 10:02 PM Reply I’m in the process of evaluating scala for a new project. The Perl effect indeed! I had a look at scala's website and i downloaded the free ebook. I don't know about you but for me it feels like common best practices in Scala introduce very cryptic syntax in order to produce one liners. I don't see the value in that , I rather keep my code base stupidly simple, rather to reduce LOC, which at a glance can make sense rather spend 1-2 minutes figuring out what each line do. Where is the productivity of scala then is it all hype ? I don't know about you but i almost never write a component once and move on, i almost always revisit the code and make improvements- modifications. I feel with scala if i revisit a part of my code base say after a few months it will take me a long time to figure out what i was doing then! I mainly use java & python and i don't see the benefits of Scala. If i need functional - dynamic features i use python and the combination of java + jython is very appealing to me. Any suggestions on what Scala brings to the table?

philippos papadatos Posts: 6 Nickname: firesoft Registered: Mar, 2012 Re: Scala, Patterns and The Perl Effect Posted: Nov 28, 2012 7:19 AM Reply well upon further investigation Scala is very interesting and complex ! if choose to make it complex...

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