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What is an existential type?
... is relay the bytecode from VirtualMachine.compile to VirtualMachine.run.
Java type wildcards (ex: List<?>) are a very limited form of existential types.
Update: Forgot to mention that you can sort of simulate existential types with universal types. First, wrap your universal type to hide t...
How to scale threads according to CPU cores?
I want to solve a mathematical problem with multiple threads in Java. my math problem can be separated into work units, that I want to have solved in several threads.
...
Using SASS with ASP.NET [closed]
...t, simple, and easy to build and integrate with a variety of platforms and languages.
There are several wrappers around the Libsass library:
SassC: a command line compiler (on Windows you need to compile the source of SassC with MsysGit to get the sassc.exe).
NSass: a .Net wrapper.
Node-Sass: to ...
Can constructors throw exceptions in Java?
... language-idiomatic way of expressing them: which is through exceptions in Java. To my mind, avoiding that idiom is where code gymnastics come in. Likewise mocking is far more effective when you've already used dependency injection rather than calling the constructor within the code. After all, when...
How to check type of variable in Java?
...
Java is a statically typed language, so the compiler does most of this checking for you. Once you declare a variable to be a certain type, the compiler will ensure that it is only ever assigned values of that type (or values...
Does using final for variables in Java improve garbage collection?
...leagues and me have a discussion about the usage of the final keyword in Java to improve the garbage collection.
15 Answe...
How do you create a REST client for Java? [closed]
...h JSR 311 and its implementations we have a powerful standard for exposing Java objects via REST. However on the client side there seems to be something missing that is comparable to Apache Axis for SOAP - something that hides the web service and marshals the data transparently back to Java objects....
How to change font size in Eclipse for Java text editors?
...erences
Set the font size, General → Appearance → Colors and Fonts → Java → Java Editor Text Font).
Save the preferences.
Check that you do not have per-project preferences. These will override the top-level preferences.
Eclipse v4.2 (Juno) note
Per comment below, this has moved to the Ecl...
H2 in-memory database. Table not found
...ckage com.gigaspaces.compass;
import org.testng.annotations.Test;
import java.sql.*;
public class H2Test {
@Test
public void testDatabaseNoMem() throws SQLException {
testDatabase("jdbc:h2:test");
}
@Test
public void testDatabaseMem() throws SQLException {
testDatabase("jdbc:h2:mem:test")...
How to implement the Java comparable interface?
...posed to equals() which return false on such scenario.
Read more: http://javarevisited.blogspot.com/2011/11/how-to-override-compareto-method-in.html#ixzz4B4EMGha3
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