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Hidden Features of MySQL
...EY, UNIQUE, or INDEX will be indexed.
NULL means "not having a value". To test for NULL, you cannot use the arithmetic comparison operators such as =, <, or <>. Use the IS NULL and IS NOT NULL operators instead:
NO_AUTO_VALUE_ON_ZERO suppresses auto increment for 0 so that only NULL gene...
What are the main performance differences between varchar and nvarchar SQL Server data types?
...
@Thomas Harlan A simple test demonstrates to me that there is no tangible difference between joining nvarchar to varchar vs converting nvarchar to varchar and joining to varchar. Unless of course you meant being consistent in column datatypes, not i...
Using AES encryption in C#
...st requires the following:
string encrypted = Cryptography.Encrypt(data, "testpass");
string decrypted = Cryptography.Decrypt(encrypted, "testpass");
By default, the implementation uses AesManaged - but you could actually also insert any other SymmetricAlgorithm. A list of the available Symmetric...
How to efficiently count the number of keys/properties of an object in JavaScript?
What's the fastest way to count the number of keys/properties of an object? It it possible to do this without iterating over the object? i.e. without doing
...
Continuously read from STDOUT of external process in Ruby
...
I am not sure what is happening in your case. I tested the code above with yes, a command-line application that never ends, and it worked. The code was as following: IO.popen('yes') { |p| p.each { |f| puts f } }. I suspect it is something that has to do with blender, and n...
How do you find the current user in a Windows environment?
...
I use this method in writing batch files for testing.
echo %userdomain%\%username%
Since you must include the password in plain text if authentication is required, I will only use it in a completely private environment where other users cannot view it or if a user s...
When to use dynamic vs. static libraries
...er, because it is rarely used dynamic linking saves on compile time, makes testing easier/faster however, if I were to build a release version, I think I would always use static library just in case of compatibility issues
– ReachConnection
Oct 16 '09 at 19:34...
Why doesn't Java allow to throw a checked exception from static initialization block?
...ver from it.
In most cases, the exception cannot be caught:
public class Test {
static {
int i = 1;
if (i == 1) {
throw new RuntimeException("Bang!");
}
}
public static void main(String[] args) {
try {
// stuff
} catch (T...
Tracking Google Analytics Page Views with AngularJS
...one tip is that google analytics will not fire on localhost. So if you are testing on localhost, use the following instead of the default create (full documentation)
ga('create', 'UA-XXXX-Y', {'cookieDomain': 'none'});
sha...
What is a NullReferenceException, and how do I fix it?
...cle:
public partial class Issues_Edit : System.Web.UI.Page
{
protected TestIssue myIssue;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
// Only called on first load, not when button clicked
myIssue = new TestIssue(); ...