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How to implement an STL-style iterator and avoid common pitfalls?
I made a collection for which I want to provide an STL-style, random-access iterator. I was searching around for an example implementation of an iterator but I didn't find any. I know about the need for const overloads of [] and * operators. What are the requirements for an iterator to be "STL-s...
$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
... request method (surprise).
$_POST contains any post data.
It's possible for a POST request to contain no POST data.
I check the request method — I actually never thought about testing the $_POST array. I check the required post fields, though. So an empty post request would give the user a lot...
Simplest way to detect a mobile device in PHP
...ng. Tested in IOS 8.1 using Chrome's mobile browser. Justin's is working for me though.
– James
Aug 27 '15 at 17:04
18
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Do I need to explicitly call the base virtual destructor?
...don't need to call the base destructor, a base destructor is always called for you by the derived destructor. Please see my related answer here for order of destruction.
To understand why you want a virtual destructor in the base class, please see the code below:
class B
{
public:
virtual ~...
How to convert An NSInteger to an int?
For example when passing a value message to an NSInteger instance like so
4 Answers
...
Resumable downloads when using PHP to send the file?
We are using a PHP scripting for tunnelling file downloads, since we don't want to expose the absolute path of downloadable file:
...
What is the difference between “px”, “dip”, “dp” and “sp”?
... use this unit when specifying font sizes, so they will be adjusted
for both the screen density and user's preference.
From Understanding Density Independence In Android:
+----------------+----------------+---------------+-------------------------------+
| Density Bucket | Screen Density ...
Disable migrations when running unit tests in Django 1.7
...models just
like syncdb did in 1.6. I defined a new settings module just for unit
tests called "settings_test.py", which imports * from the main
settings module and adds this line:
MIGRATION_MODULES = {"myapp": "myapp.migrations_not_used_in_tests"}
Then I run tests like this:
DJ...
How to run a program without an operating system?
...tem running?
You place your binary code to a place where processor looks for after rebooting (e.g. address 0 on ARM).
Can you create assembly programs that the computer can load and run at startup ( e.g. boot the computer from a flash drive and it runs the program that is on the drive)?
Gene...
What is the difference between lock and Mutex?
...c to the AppDomain, while Mutex to the Operating System allowing you to perform inter-process locking and synchronization (IPC).
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