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What does value & 0xff do in Java?
...
It sets result to the (unsigned) value resulting from putting the 8 bits of value in the lowest 8 bits of result.
The reason something like this is necessary is that byte is a signed type in Java. If you just wrote:
int result...
Which $_SERVER variables are safe?
...hose values into three categories:
Server controlled
These variables are set by the server environment and depend entirely on the server configuration.
'GATEWAY_INTERFACE'
'SERVER_ADDR'
'SERVER_SOFTWARE'
'DOCUMENT_ROOT'
'SERVER_ADMIN'
'SERVER_SIGNATURE'
Partly server controlled
These variable...
PHP Function Comments
...@var bool $_good
*/
private $_good = true;
// }}}
// {{{ setFoo()
/**
* Registers the status of foo's universe
*
* Summaries for methods should use 3rd person declarative rather
* than 2nd person imperative, beginning with a verb phrase.
*
* Summa...
How do I install a plugin for vim?
...
To expand on Karl's reply, Vim looks in a specific set of directories for its runtime files. You can see that set of directories via :set runtimepath?. In order to tell Vim to also look inside ~/.vim/vim-haml you'll want to add
set runtimepath+=$HOME/.vim/vim-haml
to you...
Disable Visual Studio devenv solution save dialog
...icrosoft shared\MSEnv\VSLauncher.exe
Select Properties
Click Compatibility
Set "Run this program as an administrator".
I also did the same for C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\devenv.exe.
sha...
What's the difference between IComparable & IEquatable interfaces?
...you have Person class
public class Person
{
public string Name { get; set; }
public int Age { get; set; }
}
Person p1 = new Person() { Name = "Person 1", Age = 34 };
Person p2 = new Person() { Name = "Person 2", Age = 31 };
Person p3 = new Person() { Name = "Person 3", Age = 33 };
Person p...
How to save MailMessage object to disk as *.eml or *.msg file
...ryLocation = @"C:\somedirectory";
client.Send(message);
You can also set this up in your
application configuration file like
this:
<configuration>
<system.net>
<mailSettings>
<smtp deliveryMethod="SpecifiedPickupDirectory">
...
How to allow keyboard focus of links in Firefox?
... this to me. It's a Mac problem. Mozilla is being true to operating system settings in Mac OS.
There are two distinct ways around this on the user side. Both seem to work:
In System Preferences → Keyboard, in the Shortcuts pane, check the “all controls” radio at the bottom.
In Firefox, type...
Display image as grayscale using matplotlib
...xample:
this is the origianl image:
original
this is using defaul norm setting,which is None:
wrong pic
this is using NoNorm setting,which is NoNorm():
right pic
share
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improve this answer
...
Calculate difference in keys contained in two Python dictionaries
...
You can use set operations on the keys:
diff = set(dictb.keys()) - set(dicta.keys())
Here is a class to find all the possibilities: what was added, what was removed, which key-value pairs are the same, and which key-value pairs are ch...