Scala is a general purpose programming language principally targeting the Java Virtual Machine. Designed to express common programming patterns in a concise, elegant, and type-safe way, it fuses both imperative and functional programming styles.

learn more… | top users | synonyms

8
votes
4answers
4k views

Would scala be a good choice instead of Java?

We will be starting a new project which will involve training all the .net developers in Java (frameworks/ECO system etc). We have a lot of code written in C# and it seems that all of this will be ...
4
votes
2answers
383 views

What has been learned about making variance part of the type?

In Java, the variance of parameterized types is indicated depending on how it's used: <A extends B,B> void store(ArrayList<B> list, A elem) { list.add(elem); } Whereas in Scala it ...
27
votes
3answers
1k views

What are the benefits and disadvantages in the approaches of C#, Java and Scala to Closures/Lambdas/…?

I wonder what the technical implementation differences between C# and Scala are and how both solutions compare to the implementation ideas and concerns voiced in the email Peek Past lambda by Brian ...
0
votes
1answer
572 views

restful web development in scala

I ve been a php developer for the past 4 years and worked in OO PHP and almost all sorts of PHP mvc frameworks. Ive joined a new company now and here we use scala for web development. We have a ...
2
votes
1answer
168 views

What is a domain of automatic testing tools such as ScalaCheck?

I've seen not so many examples of testing with automatic tools, i.e. serializing/deserializing of JSON (which was paired in the following way: val actual = deserialize(serialize(string))), checking ...
27
votes
5answers
12k views

Is Groovy going away? [closed]

I am sure this question has been asked many times. However, I like to ask it again with the intention of what is the future of these languages. I was first introduced to Groovy and really liked it. I ...
4
votes
1answer
430 views

How do I view Scala code without all the syntactic sugar?

I have been studying Scala, but what I keep running into is the optimization of syntax. I'm sure that will be great when I am an expert, but until then.. Not so much. Is there a command or a program ...
6
votes
5answers
707 views

Help me deal with higher level languages [closed]

I'm trying to learn Scala (I have previously glanced at Erlang, Haskell, Ruby and had similar issues). I do enjoy it, but I feel bad about some things it does and I wonder if that's just due to all ...
2
votes
3answers
757 views

difference between passing a value vs passing a function as a parameter in scala

I often hear that scala has a ability to pass function as a parameter to another function. I would like to know the difference between passing a value as a parameter vs passing function itself as the ...
19
votes
2answers
3k views

Is Clojure, Scala and other restrained by the JVM vs CLR [closed]

The Java implementors seem slow to adopt language improvements, for example compare C# with full closures, expression trees, LINQ etc.. to Java, and even the push back of some stuff to Java 8 will ...
9
votes
3answers
1k views

Getters and Setters in Functional Languages

One of the tenets of Functional Programming is the use of Pure Functions. A Pure function is one that is side-effect free and referentially transparent. Getters are not referentially transparent - ...
5
votes
2answers
606 views

Scala: From concept to working

Second attempt to ask my question more concisely. I want to say I am a Scala fan, or at least I want to be. I've resigned myself to learning one of these functional languages [Scala, Haskell, ...
2
votes
2answers
1k views

How to use Anorm correctly [closed]

So I'm new in scala-play world. And just got a look at Anorm and it seemed quite cool. But I was wondering what is the proper way to use it? I guess we shouldn't just put pseudo-SQL everywhere in our ...
1
vote
4answers
555 views

Usage of “Multi-Paradigm Languages” in commercial applications

I am currently learning the two languages F-Sharp and Scala. These two languages are, in my opinion, both quite comprehensive to grasp. Nonetheless, what seems to make Scala and F-Sharp similar, is ...
4
votes
3answers
314 views

How do I get feedback about whether escape analysis had any affect on my code or not?

One problem I have with compiler optimization is, that I actually never know what the compiler (or in this particular case the Jit) does with my code. So is there any possibility for me to know ...
4
votes
2answers
1k views

Using an actor model versus a producer-consumer model?

I'm doing some early-stage research towards architecting a new software application. Concurrency and multithreading will likely play a significant part, so I've been reading up on the various topics. ...
5
votes
4answers
511 views

Do resumable exceptions make any sense?

Following up my previous question I wonder if resumable exceptions make any sense. It looks like nobody uses them in Java. Don't they use resumable exceptions because of Java limitations or just ...
4
votes
1answer
454 views

Scala - learning by doing

coming from the PHP-framework symfony (with Apache/MySQL) I would like to dive into the Scala programming language. I already followed a few tutorials and had a look at Lift and Play. Java isn't a ...
4
votes
3answers
806 views

Scala Roadmap Beyond 2.9

With the Scala 2.9.0 RC3 now available and the release page http://www.scala-lang.org/node/7285 describing the great features that were added in that release, does anyone know what we can expect in ...
21
votes
8answers
3k views

Is Scala ready for prime time? [closed]

Now that I've done a few trivial things with Scala (which I love for "hello world" and contrived applications!) I am left wondering.. part about maturity of the tools to support development, and part ...
7
votes
5answers
3k views

Is there a clear leader amongst JVM-based languages? [closed]

What is the current status of these projects, and has any one (or two) emerged as a clear leader? To demonstrate my motives for asking this question, cast your mind back several years. Prototype and ...
19
votes
8answers
8k views

Why was Scala not implemented with C or C++

Does anybody know why was Scala implemented in Java and .NET instead of C or C++? Most languages are implemented with Cor C++ [i.e Erlang, Python, PHP, Ruby, Perl]. What are the advantages for Scala ...
3
votes
4answers
581 views

How to disseminate Scala?

With the announcement of Ceylon, and after observing the slides describing its intent and feature list, I reckoned this language to be a Scala competitor. Furthermore, as a Scala programmer, I can ...
67
votes
1answer
7k views

What's the difference between Scala and Red Hat's Ceylon language? [closed]

Red Hat's Ceylon language has some interesting improvements over Java: The overall vision: learn from Java's mistakes, keep the good, ditch the bad The focus on readability and ease of learning/use ...
6
votes
3answers
494 views

Arguments in support of organizational transition to Scala development

I work in an organization that does extensive Java development. Our group is small with a short-lived project, agile development charter. We will leverage existing QA resources of other groups, and ...
13
votes
1answer
2k views

Which Scala open source projects should I study to learn best coding practices [closed]

What open source projects would you recommend for people to study to learn how the pros write Scala? Some of the attributes that I'm looking for - though they don't all have to be present in every ...
12
votes
5answers
2k views

Is functional programming strongly related to mathematics?

Is functional programming so related to mathematics because much of the functional programming is depicted with mathematical notions? Is it a MUST to have a strong base of maths to learn & ...
10
votes
4answers
6k views

How Scala Developers Are Being Interviewed [closed]

How are Scala programmers being interviewed? What are the aspects that the interviewer looks for when interviewing a Scala developer?
1
vote
3answers
2k views

Advantages of Scala vs. Groovy with JAVA EE 6 Applications

Please let me first emphasize that I am not looking for flame wars. I just want advice from people who have real experiences. I started learning JAVA EE 6 as real newbie and am having a difficult ...
24
votes
3answers
2k views

Introducing Scala to a Technical Manager

I've been promoting Scala at work as something we should try out for things like testing with Specs http://code.google.com/p/specs/ and rapid prototyping of web services with tools like Scalatra ...
19
votes
10answers
7k views

What do Java developers think of Scala? [closed]

I've noted that IDE support is nowhere near as good, but the language itself supports functional programming idioms much more cleanly.
12
votes
4answers
3k views

Why is Scala more scalable than other languages? [closed]

Scala is billed as a scalable language, a feature that's even included in its name: The name Scala is a portmanteau of "scalable" and "language", signifying that it is designed to grow with the ...
12
votes
2answers
3k views

Is there a canonical book on Scala?

I'm interested in learning Scala, but due to is relative newness, I can't seem to find a whole lot of books about it. Is there a book out there that's the de-facto standard for describing best ...
43
votes
3answers
4k views

What are the biggest differences between F# and Scala?

F# and Scala are both functional programming langugages that don't force the developer to only use immutable datatypes. They both have support for objects, can use libraries written in other languages ...
18
votes
3answers
4k views

What is the best IDE for Scala? [closed]

I tried programming Scala in Netbeans and Eclipse, but it is not what I'm looking for. In Netbeans suggestions for method names etc. are not working. In Eclipse I can't go to some classes sources by ...
7
votes
6answers
2k views

What unit test frameworks exist for Java?

I've used TestNG and JUnit. What other frameworks are out there? What makes them special and/or different from the rest?
14
votes
8answers
1k views

How do you encourage your organization to move from Java to Scala? [closed]

Has anybody's organization started the migration from Java to Scala? If yes, how do you do that? What can I do to encourage my colleagues to do the same?