Comments for Kerflyn's Blog

Comment on Java 8: Now You Have Mixins? by bacar

bacar — Fri, 19 Apr 2013 09:00:00 +0000

Isn’t calling it “FakeBrokenMixin” and saying “our emulation of mixins is not compatible with Java 8″ a bit misleading?

The problem seems to be that makeX() returns the same object twice; the fact that it does so appears to have nothing to do with the fact that it’s using a mixin emulation technique. (If I’ve misunderstood this, please do correct me). Would the same problem occur – cached object returned – even if we weren’t using mixins?

The interesting and surprising thing here seems to be the behaviour of lambdas.

Comment on [FR] Brown Bag Lunch (BBL) by Zorro

Zorro — Wed, 06 Feb 2013 07:17:57 +0000

C’est quoi ce délire ?
Et puis quoi encore ? Arrêtes un peu avec ta folie Scala et java 8 !!!

Comment on BBL by [FR] Brown Bag Lunch (BBL) « Kerflyn's Blog

[FR] Brown Bag Lunch (BBL) « Kerflyn's Blog — Tue, 05 Feb 2013 23:21:15 +0000

[...] Tout le détail est ici : http://kerflyn.wordpress.com/bbl/ [...]

Comment on Java 8: Now You Have Mixins? by About Java

About Java — Wed, 26 Dec 2012 12:57:39 +0000

very useful informative article for me.. thanks for sharing..

Comment on Playing with Scala’s pattern matching by SBlog » Blog Archive » Ruby Pattern Matching

SBlog » Blog Archive » Ruby Pattern Matching — Mon, 10 Dec 2012 21:39:41 +0000

[...] One of the features I miss in Ruby after coding in scala is Pattern Matching. [...]

Comment on Playing with Scala’s pattern matching by ilangostl

ilangostl — Wed, 31 Oct 2012 18:17:36 +0000

I also found Martin’s interview on artima quite useful: The Point of Pattern Matching in Scala – http://www.artima.com/scalazine/articles/pattern_matching.html

Comment on Playing with Scala’s pattern matching by ilangostl

ilangostl — Wed, 31 Oct 2012 17:59:47 +0000

Thank you. That helps. “ch is matched with the first element of chrList and charList is matched with the rest of chrList.” I think that was the crucial piece.

Comment on Playing with Scala’s pattern matching by fsarradin

fsarradin — Wed, 24 Oct 2012 19:36:04 +0000

chrList looks like List(c1, c2, …, cn). This is the same as c1 :: (c2 :: (… :: (cn :: Nil)…)). Where :: is an operator that takes an element on the right side and a List on the left side. Scala tries to match it with ch :: charList. In such a pattern, ch is matched with the first element of chrList and charList is matched with the rest of chrList.

If you want more precise answers on this subject, I suggest that you the book “Programming in Scala” by M. Odersky et al. (http://www.artima.com/shop/programming_in_scala_2ed), or ask your questions on a Scala mailing list, or even that you get to http://stackoverflow.com/.

Comment on Playing with Scala’s pattern matching by ilango

ilango — Fri, 19 Oct 2012 15:48:03 +0000

I have been learning pattern-matching based on your blog. After that, I wrote my own code
So, how would you interpret the following case statement that I wrote myself. This works. It is used inside a higher-order function, but I still can’t interpret it very well.

def occurrences(chrList: List[Char], pairs: List[(Char, Int)]): List[(Char, Int)] = chrList match {
case (ch :: charList) => occurrences(chList.filter(_ != ch), pairs :+ (ch, 1 + chList.count(_ == ch)))
—
–
}
My problem is, I can’t seem to understand how ch is getting its values in the expression on the right. Thanks for your time.

Comment on Playing with Scala’s pattern matching by ilango

ilango — Tue, 16 Oct 2012 21:36:49 +0000

Thanks for your reply. I was running it as an application in Eclipse. I ran your code in the REPL after you asked me to and yes, it ran with no problems.