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Group by month and year in MySQL
...aryDateTime) DESC
Should use DESC for both YEAR and Month to get correct order.
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Efficiently test if a port is open on Linux?
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In order to check for port 80 I needed to use awk '$6 == "LISTEN" && $4 ~ "80$"'. Instead of checking for the dot before the port number with \.80, I used 80$. Otherwise, this also matched IP addresses containing .80 and...
What is the email subject length limit?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
...selectors by any characters (including none at all) other than hyphens, in order to improve understanding and scannability.
/* Not recommended: does not separate the words “demo” and “image” */
.demoimage {}
/* Not recommended: uses underscore instead of hyphen */
.error_status {}
/* Reco...
AngularJS ng-click stopPropagation
...n('click', function(event){
event.stopPropagation();
// In order to work with stopPropagation and two data way binding
// if you don't use scope.$apply in my case the model is not updated in the view when I click on the element that has my directive
scope.$apply(funct...
.NET XML serialization gotchas? [closed]
...L through a web page (ASP.NET), you don't want to include the Unicode Byte-Order Mark. Of course, the ways to use or not use the BOM are almost the same:
BAD (includes BOM):
XmlTextWriter wr = new XmlTextWriter(stream, new System.Text.Encoding.UTF8);
GOOD:
XmlTextWriter wr = new XmlTextWriter(...
Quicksort vs heapsort
... Quicksort. Heapsort doesn't need more memory for another array to putting ordered data as is needed by Mergesort. So why do comercial applications stick with Quicksort? What Quicksort has that is so special over others implementations?
I've tested the algorithms myself and I've seen that Quicksort...
When is it appropriate to use UDP instead of TCP? [closed]
... single hop really (routing disabled, ...), but have noticed that packet reordering could become an issue on some faulty network cards. What user-mode TCP (or some other user-mode flow controlled) stack do you suggest?
– dashesy
Mar 13 '13 at 14:28
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How does the static modifier affect this code?
... part of declaration. Declaration happens before assignment no matter what order you present them in. A obj = new A(); int num1; int num2 = 0; gets turned into this: A obj; int num1; int num2; obj = new A(); num2 = 0;. Java does this so num1, num2 are defined by the time you reach the new A() constr...
How to Generate unique file names in C#
... example, if you pass it test.txt, it will attempt to create files in this order:
test.txt
test (2).txt
test (3).txt
etc. You can specify the maximum attempts or just leave it at the default.
Here's a complete example:
class Program
{
static FileStream CreateFileWithUniqueName(string folde...