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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...
What do I return if the return type of a method is Void? (Not void!)
Due to the use of Generics in Java I ended up in having to implement a function having Void as return type:
6 Answers
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How does Junit @Rule work?
... look at the source of github.com/junit-team/junit4/blob/master/src/main/java/org/… , the folder is created in the before() callback method and deleted in the after() callback method ...
– Pierluigi Vernetto
Dec 3 '17 at 9:30
...
How do I exclude all instances of a transitive dependency when using Gradle?
...leaving the module argument the empty string:
compile ("com.github.jsonld-java:jsonld-java:$jsonldJavaVersion") {
exclude group: 'org.apache.httpcomponents', module: ''
exclude group: 'org.slf4j', module: ''
}
shar...
throw checked Exceptions from mocks with Mockito
...
Check the Java API for List.
The get(int index) method is declared to throw only the IndexOutOfBoundException which extends RuntimeException.
You are trying to tell Mockito to throw an exception SomeException() that is not valid to be ...