Questions tagged [scala]
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. Its key features are: an advanced static type system with type inference; function types; pattern-matching; implicit parameters and conversions; operator overloading; full interoperability with Java; concurrency
scala
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why is the lift web framework scalable?
I want to know the technical reasons why the lift webframework has high performance and scalability? I know it uses scala, which has an actor library, but according to the install instructions it ...
p p
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votes
5
answers
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Do you plan to use the Scala programming language and on what project?
Where do you seen using Scala for your project?
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What is the rationale behind having companion objects in Scala?
Is there a case where a companion object (singleton) for a class is needed? Why would I want to create a class, say Foo and also create a companion object for it?
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Type parameters versus member types in Scala
I'd like to know how do the member types work in Scala, and how should I associate types.
One approach is to make the associated type a type parameter. The advantages of this approach is that I can ...
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How does the "specs" BDD framework for Scala work?
I'm just getting started with Scala, and I'm wondering which language feature allows you to do this:
"PersistentQueue" should {
"add and remove one item" in {
withTempFolder {
val q = new ...
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Scala: splitting a list using a predicate for sublists
I just had a use case where I needed to split a list into n sublists, so that elements are taken in order from the original list and grouped while the predicate is true for the sublist (when it is ...
- 4,545
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Unpacking tuple types in Scala
I was just wondering, can I decompose a tuple type into its components' types in Scala?
I mean, something like this
trait Container {
type Element
}
trait AssociativeContainer extends Container {
...
- 47.6k
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votes
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Design patterns for Agent / Actor based concurrent design [closed]
Recently i have been getting into alternative languages that support an actor/agent/shared nothing architecture - ie. scala, clojure etc (clojure also supports shared state).
So far most of the ...
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Does Scala's pattern matching violate the Open/Closed Principle?
If I add a new case class, does that mean I need to search through all of the pattern matching code and find out where the new class needs to be handled? I've been learning the language recently, and ...
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Is anyone using Scala in anger (and what advice for a Java programmer)? [closed]
I've been a Java programmer for over 10 years since starting off with Smalltalk. It's my opinion that next big languages are likely to be ones which run on the ubiquitous Java Virtual Machine. I'd ...
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Scala remote actors
Are there any guides or tutorials which explain the possibility to use scala actors remotely? All I have found until now is one example (without comments) but that's hardly enough.
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Creating a parametric graph type in Scala
I'd like to create a generic type hierarchy for representing graphs. In particular, I'd like like to have classes Graph and Node, and I want that for every Graph type, there is a corresponding Node ...
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EBNF to Scala parser combinator
I have the following EBNF that I want to parse:
PostfixExp -> PrimaryExp ( "[" Exp "]"
| . id "(" ExpList ")"
| . length )*
...
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Factory methods for implementations of Java interfaces wrapped with Scala implicits?
I'm using Scala implicits to define a rich wrapper for a Java interface:
class RichThing { def richStuff: Unit = {} }
In the companion object I define the implicit conversion and an apply factory ...
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