Posted by 
By Joshua Suereth D.
Summary
Scala in Depth is a special new publication designed that can assist you combine Scala successfully into your improvement procedure. through featuring the rising top practices and designs from the Scala neighborhood, it publications you thru dozens of strong recommendations instance via example.
About the Book
Scala is a strong JVM language that blends the sensible and OO programming types. You'll don't have any hassle getting introductions to Scala in books or on-line, yet it's difficult to discover nice examples and insights from skilled practitioners. You'll locate them in Scala in Depth.
There's little heavy-handed concept here—just dozens of crisp, useful ideas for coding in Scala. Written for readers who be aware of Java, Scala, or one other OO language.
Purchase contains unfastened PDF, ePub, and Kindle eBooks downloadable at manning.com.
What's Inside* Concise, expressive, and readable code style
* easy methods to combine Scala into your present Java projects
* Scala's 2.8.0 collections API
* how one can use actors for concurrent programming
* studying the Scala sort system
* Scala's OO features—type member inheritance, a number of inheritance, and composition
* useful innovations and patterns—immutability, applicative functors, and monads
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Table of Contents<ol>* Scala—a combined language
* The center rules
* Modicum of style—coding conventions
* using item orientation
* utilizing implicits to jot down expressive code
* the sort system
* utilizing implicits and kinds together
* utilizing the fitting collection
* Actors
* Integrating Scala with Java
* styles in sensible programming
</ol>
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Additional resources for Scala in Depth
Example text
If an object’s state doesn’t change, then you can determine where objects are created to see where state changes. It can also simplify methods that are based on the state of an object. This benefit is particularly evident when defining equality or writing concurrent programs. 1 Object equality One critical reason to prefer immutability is the simplification of object equality. If an object won’t change state during its lifetime, one can create an equals implementation that is both deep and correct for any object of that type.
The if clause is a great example; this checks a conditional expression and returns one expression or another, depending on the value of the conditional expression. Let’s look at a simple REPL session: scala> if(true) "true string" else "false string" res4: String = true string scala> if(false) 5 else "hello" res5: Any = hello As you can see, in Scala an if block is an expression. Our first if block returns "true string", the true expression. The second if block returns hello, the result of the false expression.
Even with the tight integration, Java libraries usually have a form of thin Scala wrapper that provides some of the more advanced features a Java API could not provide. These features are apparent when trying to use Scala libraries inside Java. 2 Scala in Java Scala attempts to map its features to Java in the simplest possible fashion. For the most part, simple Scala features map almost one-to-one with Java features (for example, classes, abstract classes, methods). Scala has some rather advanced features that don’t map easily into Java.