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Print variables in hexadecimal or decimal format
...ry these:
# Hexadecimal
p/x variable
# Binary
p/t variable
See output formats.
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What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java
...g the global object.
The reason why it's used is so that if you have two (or more) files:
var MY_NAMESPACE = MY_NAMESPACE || {};
MY_NAMESPACE.func1 = {
}
and
var MY_NAMESPACE = MY_NAMESPACE || {};
MY_NAMESPACE.func2 = {
}
both of which share the same namespace it then doesn't matter in which ...
What does `kill -0 $pid` in a shell script do?
...given PID is running and you have the permission to send a signal to it.
For more information see the following manpages:
kill(1)
$ man 1 kill
...
If sig is 0, then no signal is sent, but error checking is still performed.
...
kill(2)
$ man 2 kill
...
If sig is 0, then no signal is sent, but e...
Library? Static? Dynamic? Or Framework? Project inside another project
...d a large chunk of code that I've been developing as another project just for ease of testing. The new chunk basically deals with saving an image to various sharing services, etc.. Because that sharing code needs a lot of testing and future updating, I was wondering what the best way to incorporate ...
What are rvalues, lvalues, xvalues, glvalues, and prvalues?
In C++03, an expression is either an rvalue or an lvalue .
11 Answers
11
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In Windows Azure: What are web role, worker role and VM role?
The application I work on contains a web role: it's a simple web application. I needed to host the application in Windows Azure, so I created a web role. I actually want to know what these roles are for. What is their significance coding wise or storage wise?
...
#include in .h or .c / .cpp?
When coding in either C or C++, where should I have the #include 's?
4 Answers
4
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What does the “yield” keyword do?
What is the use of the yield keyword in Python, and what does it do?
42 Answers
42
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How to use php serialize() and unserialize()
...
A PHP array or object or other complex data structure cannot be transported or stored or otherwise used outside of a running PHP script. If you want to persist such a complex data structure beyond a single run of a script, you need to se...
What is the difference between “px”, “dip”, “dp” and “sp”?
...
From the Android Developer Documentation:
px
Pixels - corresponds to actual pixels on the screen.
in
Inches - based on the physical size of the screen.
1 Inch = 2.54 centimeters
mm
Millimeters - based on the physical size of the screen.
pt
Points - 1/72 of an ...