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Creating the Singleton design pattern in PHP5
...ngleton would produce an instance of its parent class instead of its own.
Now you can do:
class Foobar extends Singleton {};
$foo = Foobar::getInstance();
And $foo will be an instance of Foobar instead of an instance of Singleton.
...
Convert a character digit to the corresponding integer in C
...the same for letters, for example:
char c = 'b';
int x = c - 'a'; // x is now not necessarily 1
The standard guarantees that the char values for the digits '0' to '9' are contiguous, but makes no guarantees for other characters like letters of the alphabet.
...
Algorithm to calculate the number of divisors of a given number
...ate the prime list but I don't believe that takes care of the whole issue. Now that you have a list of primes you'll need to see how many of those primes act as a divisor (and how often).
Here's some python for the algo Look here and search for "Subject: math - need divisors algorithm". Just count ...
Set “Homepage” in Asp.Net MVC
...arameter.Optional }
);
routes.MapRoute(
name: "Example",
url: "hey/now",
defaults: new { controller = "Example", action = "DoSomething", id = UrlParameter.Optional }
);
Now the DoSomething action of the ExampleController class will be mapped to the url hey/now. But this can get tedious ...
How to convert existing non-empty directory into a Git working directory and push files to a remote
...
abyx's instructions appears to work. Do I now run: git config branch.master.remote origin and git config branch.master.merge refs/heads/master and what I will end up with will be exactly the same as if I cloned the remote repository? ie git pull and git push will j...
Computational complexity of Fibonacci Sequence
I understand Big-O notation, but I don't know how to calculate it for many functions. In particular, I've been trying to figure out the computational complexity of the naive version of the Fibonacci sequence:
...
Get current time as formatted string in Go?
...
Use the time.Now() function and the time.Format() method.
t := time.Now()
fmt.Println(t.Format("20060102150405"))
prints out 20110504111515, or at least it did a few minutes ago. (I'm on Eastern Daylight Time.) There are several pre-de...
How can I undo a `git commit` locally and on a remote after `git push`
...ommits. copy that number from the commit that you want to return back.
2. Now, type in below command:
git reset --hard your_that_copied_string_but_without_quote_mark
you should see message like "HEAD is now at ". you are on clear. What it just have done is to reflect that change locally.
3. Now...
How to generate unique ID with node.js
...(); // -> '110ec58a-a0f2-4ac4-8393-c866d813b8d1'
** UPDATE 7.x
And now the above usage is deprecated as well, so use this package like this:
const { v1: uuidv1 } = require('uuid');
uuidv1(); // -> '6c84fb90-12c4-11e1-840d-7b25c5ee775a'
const { v4: uuidv4 } = require('uuid');
uuidv4()...
How do I record audio on iPhone with AVAudioRecorder?
Now that iPhone 3.0 SDK is public, I think I can ask this question for those of you that have already been playing with the 3.0 SDK. I want to record audio in my application, but I want to use AVAudioRecorder and not the older way of recording like the example SpeakHere shows. There are not any...