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What is the difference between a static and a non-static initialization code block
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The code block with the static modifier signifies a class initializer; without the static modifier the code block is an instance initializer.
Class initializers are executed in the order they are defined (top down, just like simple variable initializers) w...
How to move columns in a MySQL table?
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If empName is a VARCHAR(50) column:
ALTER TABLE Employees MODIFY COLUMN empName VARCHAR(50) AFTER department;
EDIT
Per the comments, you can also do this:
ALTER TABLE Employees CHANGE COLUMN empName empName VARCHAR(50) A...
What is the most efficient way to create HTML elements using jQuery?
...e is the fastest. I speculate this is because jQuery doesn't have to identify it as an element and create the element itself.
You should really run benchmarks with different Javascript engines and weigh your audience with the results. Make a decision from there.
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Open files in 'rt' and 'wt' modes
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t refers to the text mode. There is no difference between r and rt or w and wt since text mode is the default.
Documented here:
Character Meaning
'r' open for reading (default)
'w' open for writing, truncating the file first
'x' open for exclusive c...
I just discovered why all ASP.Net websites are slow, and I am trying to work out what to do about it
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If your page does not modify any session variables, you can opt out of most of this lock.
<% @Page EnableSessionState="ReadOnly" %>
If your page does not read any session variables, you can opt out of this lock entir...
Using wget to recursively fetch a directory with arbitrary files in it
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If you don't want to download the entire content, you may use: -l1 just download the directory (example.com in your case) -l2 download the directory and all level 1 subfolders ('example.com/something' but not 'example.com/s...
What is the difference between CurrentCulture and CurrentUICulture properties of CultureInfo in .NET
... app.
Often times they are both the same. But on my system they would be different: I prefer my numbers and dates in the German format, so the CurrentCulture would be German, but I also prefer all my applications in English, so the CurrentUICulture would be English.
There is a nice article on the ...
Go naming conventions for const
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It's also important to determine if you want your const element exposed to other packages. If you use UpperCamelCase or ALL_CAPS you'll be exporting it outside of your package. For this reason, I stick to lowerCamelCase for private const variables, and I rec...
Instantiating object of type parameter
...at is known about T is that it is some subclass of Object. You need to specify some factory to create instances of T.
One approach could use a Supplier<T>:
class MyClass<T> {
private final Supplier<? extends T> ctor;
private T field;
MyClass(Supplier<? extends T> c...
Differences between Intent and PendingIntent
...ticles and both seem to do the same thing and I was wondering what is the difference between starting the service like that:
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