Comments on: An introduction to the Scala programming language by Bill Venners http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/ For developers - by developers Sun, 24 Apr 2011 11:26:05 +0200 http://wordpress.org/?v=2.8.4 hourly 1 By: Alan http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-15435 Alan Mon, 25 Jan 2010 23:39:22 +0000 http://blog.jaoo.dk/?p=455#comment-15435 Scala + clojure is a real power for me. I absolutely love them both. Scala + clojure is a real power for me. I absolutely love them both.

]]> By: Christian http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-7508 Christian Thu, 11 Jun 2009 11:00:13 +0000 http://blog.jaoo.dk/?p=455#comment-7508 The blog software stripped Java Generics syntax, hopefully it is now displayed correct: HashMap<String, Integer> m = new HashMap<String, Integer>(); The blog software stripped Java Generics syntax, hopefully it is now displayed correct:
HashMap<String, Integer> m = new HashMap<String, Integer>();

]]> By: Christian http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-7503 Christian Thu, 11 Jun 2009 08:45:36 +0000 http://blog.jaoo.dk/?p=455#comment-7503 Scala syntax might look a bit uncommon to Java developers, but if you have learned some basic rules it is very readable. Java is full of clutter. Compare these two examples: // Java HashMap m = new HashMap(); m.put("Pete", 123); m.put("Mira", 709); m.put("Dave", 155); // Scala val m = Map[String, Int]("Pete" -> 123, "Mira" -> 709, "Dave" -> 155) Java has no convenient syntax for maps, you have to write types, although the compiler could use interference. Scala syntax might look a bit uncommon to Java developers, but if you have learned some basic rules it is very readable. Java is full of clutter.

Compare these two examples:

// Java
HashMap m = new HashMap();
m.put(”Pete”, 123);
m.put(”Mira”, 709);
m.put(”Dave”, 155);

// Scala
val m = Map[String, Int](”Pete” -> 123, “Mira” -> 709, “Dave” -> 155)

Java has no convenient syntax for maps, you have to write types, although the compiler could use interference.

]]> By: Pete http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-6206 Pete Wed, 06 May 2009 17:52:53 +0000 http://blog.jaoo.dk/?p=455#comment-6206 Great talk, I think Scala has lotta potential and it is the thing to watch right now. And for those lost souls screaming above about "confusing syntax"..hm... what is it you talking about??? Are you totally blind not to see that things are being GREATLY easier then it was in Java...if you dont see that....programing might not be the best fit for your future guys. Great talk,
I think Scala has lotta potential and it is the thing to watch right now.
And for those lost souls screaming above about “confusing syntax”..hm… what is it you talking about??? Are you totally blind not to see that things are being GREATLY easier then it was in Java…if you dont see that….programing might not be the best fit for your future guys.

]]> By: Thor http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-5352 Thor Tue, 14 Apr 2009 13:27:46 +0000 http://blog.jaoo.dk/?p=455#comment-5352 Having seen the presentation video now, my impression is that Scala is a cool improvement of Java, with way simpler code for certain things, and keeping backwards compatibility to Java code. Like Python is minimalistic to Perl, so is Scala minimalistic to Java. And both adds more power instead of reducing it. Having seen the presentation video now, my impression is that Scala is a cool improvement of Java, with way simpler code for certain things, and keeping backwards compatibility to Java code.

Like Python is minimalistic to Perl, so is Scala minimalistic to Java. And both adds more power instead of reducing it.

]]> By: Thor http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-5348 Thor Tue, 14 Apr 2009 10:31:05 +0000 http://blog.jaoo.dk/?p=455#comment-5348 I'm just commenting the commented code bits here; A trick or two that reduces coding is not really a new language, it is merely a clever improvement. I'd prefer you call it a language extension. With the plans for more rapid Java versioning (from 3 years down to 1 year) I think we can expect to see more changes in Java over the years. I’m just commenting the commented code bits here;

A trick or two that reduces coding is not really a new language, it is merely a clever improvement. I’d prefer you call it a language extension. With the plans for more rapid Java versioning (from 3 years down to 1 year) I think we can expect to see more changes in Java over the years.

]]> By: dejj http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-4348 dejj Wed, 11 Mar 2009 20:19:07 +0000 http://blog.jaoo.dk/?p=455#comment-4348 If he co-authored the book like he gave the speech... "...not programmed in a functional language like Haskell... that was me a year and a half ago" He should have detailed on the trade-offs on taking things from Ruby and making them statically typed. Also, he didn't mention anything about the typing of "super" in Traits (Mixins). Something like "type requirements are checked against... in order not to violate static typing." If he co-authored the book like he gave the speech…
“…not programmed in a functional language like Haskell… that was me a year and a half ago”

He should have detailed on the trade-offs on taking things from Ruby and making them statically typed.
Also, he didn’t mention anything about the typing of “super” in Traits (Mixins). Something like “type requirements are checked against… in order not to violate static typing.”

]]> By: James Iry http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-4340 James Iry Wed, 11 Mar 2009 02:45:29 +0000 http://blog.jaoo.dk/?p=455#comment-4340 Josh's comment likely got partially eaten due to angled brackets. Using square brackets instead of angled so it doesn't get eaten, the Java code would be // Some Java Map myMap[Integer, String] = new HashMap[Integer,String](); myMap.put(1, “Hello”); Compare that with Scala // Some Scala val myMap = Map(1 -> "hello") I submit to you: which example is the more the ridiculous, confusing, and tedious? Josh’s comment likely got partially eaten due to angled brackets. Using square brackets instead of angled so it doesn’t get eaten, the Java code would be

// Some Java
Map myMap[Integer, String] = new HashMap[Integer,String]();
myMap.put(1, “Hello”);

Compare that with Scala

// Some Scala
val myMap = Map(1 -> “hello”)

I submit to you: which example is the more the ridiculous, confusing, and tedious?

]]> By: Guessin http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-4330 Guessin Tue, 10 Mar 2009 13:40:40 +0000 http://blog.jaoo.dk/?p=455#comment-4330 my guess is that LogicallyGenius didn't get the "scale" part. So he sees that you can scale in Scala using new types or new control structures. Feels like the author did not infor very well and just want to comment ( badly) on it. my guess is that LogicallyGenius didn’t get the “scale” part. So he sees that you can scale in Scala using new types or new control structures.

Feels like the author did not infor very well and just want to comment ( badly) on it.

]]> By: Josh Suereth http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-4328 Josh Suereth Tue, 10 Mar 2009 11:27:08 +0000 http://blog.jaoo.dk/?p=455#comment-4328 Wow! Tedious syntax? val myMap = Map(1 -> "Hello") Map myMap = new HashMap() myMap.put(1, "Hello") I think I prefer the former (and it is still as strongly typed.) Wow!

Tedious syntax?

val myMap = Map(1 -> “Hello”)

Map myMap = new HashMap()
myMap.put(1, “Hello”)

I think I prefer the former (and it is still as strongly typed.)

]]> By: Janko http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-4323 Janko Tue, 10 Mar 2009 07:55:40 +0000 http://blog.jaoo.dk/?p=455#comment-4323 Very interesting talk. Very interesting talk.

]]> By: charles chuah http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-4318 charles chuah Tue, 10 Mar 2009 05:20:45 +0000 http://blog.jaoo.dk/?p=455#comment-4318 Every stimulating language and well presented . great stuff. Every stimulating language and well presented . great stuff.

]]> By: James Iry http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-4311 James Iry Mon, 09 Mar 2009 20:41:18 +0000 http://blog.jaoo.dk/?p=455#comment-4311 I'm really struggling, apparently in vain, to understand what closures have to do with the challenge of versioning independently deployable components like DLLs, jars, etc. Also, I didn't see Bill Veneers rut in the entire video. Perhaps he's very subtle about it. I’m really struggling, apparently in vain, to understand what closures have to do with the challenge of versioning independently deployable components like DLLs, jars, etc.

Also, I didn’t see Bill Veneers rut in the entire video. Perhaps he’s very subtle about it.

]]> By: LogicallyGenius http://blog.jaoo.dk/2009/03/09/an-introduction-to-the-scala-programming-language-by-bill-venners/comment-page-1/#comment-4307 LogicallyGenius Mon, 09 Mar 2009 15:14:31 +0000 http://blog.jaoo.dk/?p=455#comment-4307 Ridiculous tedious Confusing syntax, DLL hell was nothing compared to Closures. Scala = Java - - The worst part is that he didnt even show proper examples, just rut. Ridiculous tedious Confusing syntax,

DLL hell was nothing compared to Closures.

Scala = Java – -

The worst part is that he didnt even show proper examples, just rut.

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