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Android emulator and virtualbox cannot run at same time
Whenever I have Virtualbox running, I cannot start an Android emulator image (and vice versa). The error message in the AVD manager is
...
jQuery callback for multiple ajax calls
...hree ajax calls in a click event. Each ajax call does a distinct operation and returns back data that is needed for a final callback. The calls themselves are not dependent on one another, they can all go at the same time, however I would like to have a final callback when all three are complete.
...
C# Passing Function as Argument [duplicate]
...s mentioned above works but there are also delegates that do the same task and also define intent within the naming:
public delegate double MyFunction(double x);
public double Diff(double x, MyFunction f)
{
double h = 0.0000001;
return (f(x + h) - f(x)) / h;
}
public double MyFunctionMet...
Best practices to test protected methods with PHPUnit
...If you're using PHP5 (>= 5.3.2) with PHPUnit, you can test your private and protected methods by using reflection to set them to be public prior to running your tests:
protected static function getMethod($name) {
$class = new ReflectionClass('MyClass');
$method = $class->getMethod($name);...
Hidden Features of SQL Server
...velopers still don't seem to know about the OUTPUT clause (SQL Server 2005 and newer) on the DELETE, INSERT and UPDATE statement.
It can be extremely useful to know which rows have been INSERTed, UPDATEd, or DELETEd, and the OUTPUT clause allows to do this very easily - it allows access to the "vir...
Align contents inside a div
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text-align aligns text and other inline content. It doesn't align block element children.
To do that, you want to give the element you want aligned a width, with ‘auto’ left and right margins. This is the standards-compliant way that works eve...
release Selenium chromedriver.exe from memory
...ou really should call browser.quit() as this method will close all windows and kills the process. You should still use browser.quit().
However: At my workplace, we've noticed a huge problem when trying to execute chromedriver tests in the Java platform, where the chromedriver.exe actually still...
Unable to resolve “unable to get local issuer certificate” using git on Windows with self-signed cer
... test repository has a self signed certificate at the server. I can access and use the repository using HTTP without problems. Moving to HTTPS gives the error:
...
How to get started with developing Internet Explorer extensions?
...previous version of this answer (for Internet Explorer 8, in Windows 7 x64 and Visual Studio 2010) is at the bottom of this answer.
Creating a Working Internet Explorer 11 Add-on
I am using Visual Studio 2017 Community, C#, .Net Framework 4.6.1, so some of these steps might be slightly different f...
Pointer arithmetic for void pointer in C
...
Final conclusion: arithmetic on a void* is illegal in both C and C++.
GCC allows it as an extension, see Arithmetic on void- and Function-Pointers (note that this section is part of the "C Extensions" chapter of the manual). Clang and ICC likely allow void* arithmetic for the purpose...