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When is a function too long? [closed]
...e standard API isn't always a model of elegance. Furthermore, much of the Java API was developed with an intimate knowledge of the Java Compiler and JVM, hence you have performance considerations that may explain it. I concede that critical sections of code that can not waste a single millisecond ...
How default .equals and .hashCode will work for my classes?
... into an integer, but this implementation technique is not required by the JavaTM programming language.)
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How to generate the JPA entity Metamodel?
...;-AaddGeneratedAnnotation=false</compilerArguments> <!-- suppress java.annotation -->
<processors>
<processor>org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor</processor>
</processors>
</configuration...
Package objects
...ed to emulate a package wide import
// especially useful when wrapping a Java API
type DateTime = org.joda.time.DateTime
type JList[T] = java.util.List[T]
// Define implicits needed to effectively use your API:
implicit def a2b(a: A): B = // ...
}
Now the definitions inside that packa...
What is this 'Lambda' everyone keeps speaking of?
...of executable code, that can be passed around as if it were a variable. In JavaScript:
function () {}; // very simple
Let's see now some uses for these lambdas.
Abstracting boilerplate code
Lambdas may be used to abstract away boilerplate code. For example loops. We're used to write for and wh...
How to choose between Hudson and Jenkins? [closed]
...rce, trackers, website, etc. were hosted by Sun on their relatively closed java.net platform.
Then Oracle bought Sun. For various reasons Oracle has not been shy about leveraging what it perceives as its assets. Those include some control over the logistic platform of Hudson, and particularly contr...
Using comparison operators in Scala's pattern matching system
...s only that the non-equal outcomes will be greater than or less than zero. Java's Comparable#compareTo(T) is specified similarly to Scala's. It happens to be conventional to use 1 and -1 for the positive and negative values, respectively, as Scala's current implementation does, but one can't make su...
What are the Ruby Gotchas a newbie should be warned about? [closed]
...es not generate an error or warning. This is similar to final variables in Java, but Ruby does also have the functionality to "freeze" an object, unlike Java.
Some features which differ notably from other languages:
The usual operators for conditional expressions, and and or, do not follow the n...
Why do we use arrays instead of other data structures?
...get hardware that is relatively powerful. Using a List in C# or Vector in Java is the right choice to make in these situations because these structures allow the developer to accomplish the goals faster, which in turn allows this type of software to be more featured.
When writing embedded software...
Why do I want to avoid non-default constructors in fragments?
...
Bundles can carry serialized Java objects as well as Parcelable objects. Also, you should not pass a Context, because that information can be accessed via the fragment's getActivity() method.
– krakatoa
Feb 15 '13 a...