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Elegant way to invert a map in Scala
... = Map(1 -> "one", 2 -> "two")
m: scala.collection.immutable.Map[Int,java.lang.String] = Map(1 -> one, 2 -> two)
scala> val reversedM = m map { case (k, v) => (v, k) }
reversedM: scala.collection.immutable.Map[java.lang.String,Int] = Map(one -> 1, two -> 2)
Note that dupli...
What is the meaning of single and double underscore before an object name?
... private in Python. When diving into semantics I'd say we can tie the _ to Java's protected since proctected in Java means "derived classes and/or within same package". Replace package with module since PEP8 already tells us that _ is not just a convention when talking about * imports and there you ...
How do you assert that a certain exception is thrown in JUnit 4 tests?
... before, there are many ways of dealing with exceptions in JUnit. But with Java 8 there is another one: using Lambda Expressions. With Lambda Expressions we can achieve a syntax like this:
@Test
public void verifiesTypeAndMessage() {
assertThrown(new DummyService()::someMethod)
.isI...
How to get the last date of a particular month with JodaTime?
...
@Jon Skeet How to get this using Java 8's new Date and Time API?
– Warren Nocos
Nov 9 '15 at 12:21
5
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Java Stanford NLP: Part of Speech labels?
The Stanford NLP, demo'd here , gives an output like this:
10 Answers
10
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Android Fragment onClick button Method
...s PageListActivity extends ButtonHandlingActivity
ButtonHandlingActivity.java:
public class ButtonHandlingActivity extends Activity {
public void onButtonSomething(View v) {
OnClickFragments.invokeFragmentButtonHandlerNoExc(v);
//or, if you want to handle exceptions:
// try {
//...
Best way to “negate” an instanceof
...s thinking if there exists a better/nicer way to negate an instanceof in Java.
Actually, I'm doing something like:
9 Answ...
How to call a SOAP web service on Android [closed]
...mplement a REST-ful interface that proxies the SOAP envelopes through WSDL2Java.
– user4903
Jul 15 '11 at 17:57
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show 2 more comments
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When to use Spring Integration vs. Camel?
...logies are supported.
Besides, a (good) XML DSL, there are fluent APIs for Java, Groovy and Scala.
Because Apache Camel has very good integration with Spring, I would even use it instead of Spring Integration in most Spring projects.
If you need more details, you can read my experiences in my blo...
WebDriver: check if an element exists? [duplicate]
... this is the recommended way to look for non-exist element in selenium javadoc, just in case anyone needs a pointer to it: selenium.googlecode.com/git/docs/api/java/org/openqa/selenium/…
– Chen Xie
Mar 20 '15 at 22:35
...