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When should the volatile keyword be used in C#?
Can anyone provide a good explanation of the volatile keyword in C#? Which problems does it solve and which it doesn't? In which cases will it save me the use of locking?
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Why doesn't Java allow generic subclasses of Throwable?
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As mark said, the types are not reifiable, which is a problem in the following case:
try {
doSomeStuff();
} catch (SomeException<Integer> e) {
// ignore that
} catch (SomeException<String> e) {
crashAndBurn()
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How to list the contents of a package using YUM?
I know how to use rpm to list the contents of a package ( rpm -qpil package.rpm ). However, this requires knowing the location of the .rpm file on the filesystem. A more elegant solution would be to use the package manager, which in my case is YUM. How can YUM be used to achieve this?
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How do I do a not equal in Django queryset filtering?
... I've never used them but it seems they can be negated and combined much like normal python expressions.
Update: I Just tried it out, it seems to work pretty well:
>>> from myapp.models import Entry
>>> from django.db.models import Q
>>> Entry.objects.filter(~Q(id = 3))
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PDO mysql: How to know if insert was successful
...e on success. There is also PDOStatement->errorCode() which you can check for errors.
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How to output in CLI during execution of PHP Unit tests?
When running a PHPUnit test, I would like to be able to dump output so I can debug one or two things.
17 Answers
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Javascript - Track mouse position
I am hoping to track the position of the mouse cursor, periodically every t mseconds. So essentially, when a page loads - this tracker should start and for (say) every 100 ms, I should get the new value of posX and posY and print it out in the form.
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.NET - How can you split a “caps” delimited string into an array?
...answered Sep 30 '08 at 22:59
Markus JarderotMarkus Jarderot
76.3k1717 gold badges126126 silver badges133133 bronze badges
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Populate XDocument from String
I'm working on a little something and I am trying to figure out whether I can load an XDocument from a string. XDocument.Load() seems to take the string passed to it as a path to a physical XML file.
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How to send HTTP request in java? [duplicate]
...onnection.
Example (from here), with improvements. Included in case of link rot:
public static String executePost(String targetURL, String urlParameters) {
HttpURLConnection connection = null;
try {
//Create connection
URL url = new URL(targetURL);
connection = (HttpURLConnection)...