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Why are quaternions used for rotations?
...ndependent components--it's constrained. A two dimensional rotation is specified by three coordinates in three dimensions, regardless of representation. Matrices have more components in general because they can do more than rotations. But in the case of rotations the extra components are determined ...
Failed to serialize the response in Web API with Json
...it isn't necessary to remove formatters or supported media types typically if you are just specifying the "Accepts" header in the request. Playing around with that stuff can sometimes make things more confusing.
Example:
public class UserModel {
public string Name {get;set;}
public string...
How to continue a task when Fabric receives an error
When I define a task to run on several remote servers, if the task runs on server one and exits with an error, Fabric will stop and abort the task. But I want to make fabric ignore the error and run the task on the next server. How can I make it do this?
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Understanding slice notation
...lue represents the first value that is not in the selected slice. So, the difference between stop and start is the number of elements selected (if step is 1, the default).
The other feature is that start or stop may be a negative number, which means it counts from the end of the array instead of th...
Java Timer vs ExecutorService?
...umber of threads. Furthermore, you have full control over created threads, if you want (by providing ThreadFactory).
Runtime exceptions thrown in TimerTask kill that one thread, thus making Timer dead :-( ... i.e. scheduled tasks will not run anymore. ScheduledThreadExecutor not only catches runtime...
Configuration System Failed to Initialize
...
Make sure that your config file (web.config if web, or app.config if windows) in your project starts as:
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="applicationSettings"
type="Syste...
Run class in Jar file
If you have a jar file called myJar.jar located in /myfolder and you want to use the class called myClass from it, how do you go about doing it from the command line?
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iOS 7 style Blur view
...
You might be able to modify something like Bin Zhang's RWBlurPopover to do this. That component uses my GPUImage to apply a Gaussian blur to components underneath it, but you could just as easily use a CIGaussianBlur for the same. GPUImage might be ...
What is wrong with using goto? [duplicate]
I was ramdomming through xkcd and saw this one (if also read some negative texts about them some years ago):
What is actually wrong with it? Why are goto's even possible in C++ then?
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How to get Core Data object from specific Object ID?
...rror **)error
Fetches the object from the store that has that ID, or nil if it doesn't exist.
(Be aware: there are two methods on NSManagedObjectContext with similar-seeming names that tripped me up. To help keep them straight, here's what the other two do:
-(NSManagedObject *)objectWithID:(NSMa...