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How to check if a DateTime occurs today?
...kOverflow how to use a custom class he created and expect us to magically know how it worked. ;)
– Brian Schroth
Oct 21 '09 at 16:04
2
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Fast way of counting non-zero bits in positive integer
...nd, gmpy popcount() took about 1/20th of the time of bin(n).count("1"). So if you can install gmpy, use that.
To answer a question in the comments, for bytes I'd use a lookup table. You can generate it at runtime:
counts = bytes(bin(x).count("1") for x in range(256)) # py2: use bytearray
Or jus...
What is routes.IgnoreRoute(“{resource}.axd/{*pathInfo}”)
...
Some Background
If you open up this file:
%WINDIR%\Microsoft.NET\Framework\version\Config\Web.config
you will find this within the file:
<add path="WebResource.axd"
verb="GET"
type="System.Web.Handlers.AssemblyResourceLoader...
Best practices for Storyboard login screen, handling clearing of data upon logout
...ithOptions
//authenticatedUser: check from NSUserDefaults User credential if its present then set your navigation flow accordingly
if (authenticatedUser)
{
self.window.rootViewController = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateInitialViewController...
What is the Git equivalent for revision number?
...es, how can git reasonably assign a sequential revision number? A has no knowledge of B before they push/pull each other's changes.
Another thing to look at is simplified branching for bugfix branches:
Start with a release: 3.0.8. Then, after that release, do this:
git branch bugfixes308
This...
C++ performance vs. Java/C#
...to do all of its heap compression at once (a fairly expensive operation).
Now I can't speak for Java on this next point, but I know that C# for example will actually remove methods and method calls when it knows the body of the method is empty. And it will use this kind of logic throughout your cod...
Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
... // $arr1 is still array(2, 3)
$arr3 = &$arr1;
$arr3[] = 4; // now $arr1 and $arr3 are the same
?>
For the first part, the best way to be sure is to try ;-)
Consider this example of code :
function my_func($a) {
$a[] = 30;
}
$arr = array(10, 20);
my_func($arr);
var_dump($arr...
Difference between Destroy and Delete
What is the difference between
6 Answers
6
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Are there benefits of passing by pointer over passing by reference in C++?
...
A pointer can receive a NULL parameter, a reference parameter can not. If there's ever a chance that you could want to pass "no object", then use a pointer instead of a reference.
Also, passing by pointer allows you to explicitly see at the call site whether the object is passed by value or by ...
Java code To convert byte to Hexadecimal
...omponent of that array.. The confusion arised because of the word "array". Now in the below code " byte bv = 10; String hexString = Integer.toHexString(bv); " CAse 1 (Byte Recieved : 68 Hex Output : : 44) Case : 2 (Byte Recieved : -46 Hex Output : : ffffffd2)......... ...