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When to use in vs ref vs out
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You should use out unless you need ref.
It makes a big difference when the data needs to be marshalled e.g. to another process, which can be costly. So you want to avoid marshalling the initial value when the method doesn't make use of it.
Beyond that, it also sho...
What are the differences between “generic” types in C++ and Java?
Java has generics and C++ provides a very strong programming model with template s.
So then, what is the difference between C++ and Java generics?
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How to maintain a Unique List in Java?
...nd e2 such that e1.equals(e2), and at most one null element. As implied by its name, this interface models the mathematical set abstraction.
Note: Great care must be exercised if mutable objects are used as set elements. The behavior of a set is not specified if the value of an object is change...
Why does Razor _layout.cshtml have a leading underscore in file name?
In the default ASP.NET MVC 3 project, layout & partial cshtml files start with an underscore
5 Answers
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How do I unlock a SQLite database?
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edited Jun 17 '16 at 14:41
guruz
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answe...
Functional, Declarative, and Imperative Programming [closed]
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At the time of writing this, the top voted answers on this page are imprecise and muddled on the declarative vs. imperative definition, including the answer that quotes Wikipedia. Some answers are conflating the terms in different ways.
Refer...
Git submodule update
I'm not clear on what the following means (from the Git submodule update documentation):
4 Answers
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What is the equivalent of Java's final in C#?
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The final keyword has several usages in Java. It corresponds to both the sealed and readonly keywords in C#, depending on the context in which it is used.
Classes
To prevent subclassing (inheritance from the defined class):
Java
public final class MyFinalClass {...}
C#
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PHPUnit assert that an exception was thrown?
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<?php
require_once 'PHPUnit/Framework.php';
class ExceptionTest extends PHPUnit_Framework_TestCase
{
public function testException()
{
$this->expectException(InvalidArgumentException::class);
// or for PHPUnit < 5.2
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android asynctask sending callbacks to ui [duplicate]
I have the following asynctask class which is not inside the activity. In the activity I'm initializing the asynctask, and I want the asynctask to report callbacks back to my activity.
Is it possible? Or does the asynctask must be in the same class file as the activity?
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