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How can I convert immutable.Map to mutable.Map in Scala?
...p(1 -> "one", 2 -> "two")
//iMap: scala.collection.immutable.Map[Int,java.lang.String] = Map((1,one), (2,two))
scala> val mMap = new HashMap[Int,String] {
| override def default(key: Int): String = iMap(key)
| }
//mMap: scala.collection.mutable.HashMap[Int,String] = Map()
...
The apk must be signed with the same certificates as the previous version
...nal APK and update APK were signed with by using these commands, using the Java keytool:
keytool -list -printcert -jarfile original.apk
keytool -list -printcert -jarfile update.apk
This shows you detailed information about the how an APK was signed, for example:
Owner: CN=My App, O=My Company,...
Math.random() versus Random.nextInt(int)
...s : time:328 milesecond.
usingMathsRandom : time:187 milesecond.
package javaFuction;
import java.util.Random;
public class RandomFuction
{
static int array[] = new int[9999];
static long sum = 0;
public static void usingMathsRandom() {
for (int i = 0; i < 9999; i++) {
...
Coding in Other (Spoken) Languages
...
In the Java language some methods must be named (at least partially) using the English language because of the JavaBeans convention.
This convention requires that a property X be established via a pair of getX() and setX() methods....
Can I use my existing git repo with openshift?
... wrote a jboss tools blog which was demonstrating how to use the openshift-java-client some months ago: https://community.jboss.org/wiki/Enable-openshift-ciFullExampleUsingOpenshift-java-client . You'll spot the above steps in the last paragraph "We're almost there".
...
Any reason why scala does not explicitly support dependent types?
...a {
| val foo = foo1
| val bar = new foo.Bar
| }
sigma: java.lang.Object with Sigma{val bar: this.foo.Bar} = $anon$1@e3fabd8
and in fact, this is a crucial part of the encoding of dependent method types which is needed to escape from the 'Bakery of Doom' in Scala prior to 2.10 (...
Why would you use String.Equals over ==? [duplicate]
...'s entirely likely that a large portion of the developer base comes from a Java background where using == to compare strings is wrong and doesn't work.
In C# there's no (practical) difference (for strings) as long as they are typed as string.
If they are typed as object or T then see other answers...
What is the best algorithm for overriding GetHashCode?
...something like the implementation given in Josh Bloch's fabulous Effective Java. It's fast and creates a pretty good hash which is unlikely to cause collisions. Pick two different prime numbers, e.g. 17 and 23, and do:
public override int GetHashCode()
{
unchecked // Overflow is fine, just wrap...
When to use Hadoop, HBase, Hive and Pig?
...natively you can write sequential programs using other HBase APIs, such as Java, to put or fetch the data. But we use Hadoop, HBase etc to deal with gigantic amounts of data, so that doesn't make much sense. Using normal sequential programs would be highly inefficient when your data is too huge.
Co...
How do you properly use namespaces in C++?
I come from a Java background, where packages are used, not namespaces. I'm used to putting classes that work together to form a complete object into packages, and then reusing them later from that package. But now I'm working in C++.
...