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call a static method inside a class?
...o the most common way of calling a static method:
self::staticMethod();
Now, before you start thinking that the :: is the static call operator, let me give you another example:
self::bar();
This will print baz = 1, which means that $this->bar() and self::bar() do exactly the same thing; tha...
encryption/decryption with multiple keys
...
Ditto. It be cool to know how to do that, but I can't find hide no man page on it.
– MarkusQ
Feb 28 '09 at 2:49
...
Elastic search, multiple indexes vs one index and types for different data sets?
...e an application developed using the MVC pattern and I would like to index now multiple models of it, this means each model has a different data structure.
...
Why are const parameters not allowed in C#?
...ld call some mutating method on a non const alias of the const object, and now the so-called const object has changed.
C-style const provides no guarantee that the object will not change, and is therefore broken. Now, C already has a weak type system in which you can do a reinterpret cast of a doub...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...re.
What exactly is the Year 2038 problem?
"The year 2038 problem (also known as Unix Millennium Bug, Y2K38 by analogy to the Y2K problem) may cause some computer software to fail before or in the year 2038. The problem affects all software and systems that store system time as a signed 32-bit int...
Random String Generator Returning Same String [duplicate]
...ething like this:
private static Random random = new Random((int)DateTime.Now.Ticks);//thanks to McAden
private string RandomString(int size)
{
StringBuilder builder = new StringBuilder();
char ch;
for (int i = 0; i < size; i++)
{
ch = Convert.ToCh...
Entity Framework 4 - AddObject vs Attach
...
Yep, i gotcha now. I just watched a TechEd vid on EF4 (by Julie Lerman), which showed an example. You might have an entity which you DID NOT retrieve from a query (ie it's diconnected), but you know it exists, therefore you use Attach to p...
Node.js Best Practice Exception Handling
...
Update: Joyent now has their own guide. The following information is more of a summary:
Safely "throwing" errors
Ideally we'd like to avoid uncaught errors as much as possible, as such, instead of literally throwing the error, we can inst...
Should I pass an std::function by const-reference?
...id> run_in_ui_thread( std::function<void()> const& ) // (B)
Now, we are likely to use these as follows:
run_in_ui_thread( [=]{
// code goes here
} ).wait();
which will create an anonymous closure (a lambda), construct a std::function out of it, pass it to the run_in_ui_thread fun...
What does the construct x = x || y mean?
...hy; otherwise you'd get "Neither x nor y is truthy".
The actual question
Now, when you know how || operator works, you can probably make out by yourself what does x = x || y mean. If x is truthy, x is assigned to x, so actually nothing happens; otherwise y is assigned to x. It is commonly used to ...