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Should I instantiate instance variables on declaration or in the constructor?
...
There is no difference - the instance variable initialization is actually put in the constructor(s) by the compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constru...
What is the best comment in source code you have ever encountered? [closed]
...ents, code poetry and little jokes into most of my projects (although I usually have enough sense to remove anything directly offensive before releasing the code). Here's one I'm particulary fond of, placed far, far down a poorly-designed 'God Object':
/**
* For the brave souls who get this far: Yo...
Disabled form inputs do not appear in the request
...idden element cannot have the same name (or shouldn't). I got past this by allowing the element to be empty and just puling the original value from the saved form state. It's just worth noting readonly does not work on select form items.
– danielson317
May 5 '1...
What is “2's Complement”?
...lement.
To understand, you have to think of the numbers in binary.
It basically says,
for zero, use all 0's.
for positive integers, start counting up, with a maximum of 2(number of bits - 1)-1.
for negative integers, do exactly the same thing, but switch the role of 0's and 1's (so instead of start...
Get protocol, domain, and port from URL
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This doesn't work at all if you have a URL string, right? (i.e. you need to be at location for this to work)
– Nick T
Oct 5 '15 at 22:57
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What is the proper way to display the full InnerException?
...ply print exception.ToString() -- that will also include the full text for all the nested InnerExceptions.
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Grabbing the href attribute of an A element
...ml($node), PHP_EOL;
}
The above would find and output the "outerHTML" of all A elements in the $html string.
To get all the text values of the node, you do
echo $node->nodeValue;
To check if the href attribute exists you can do
echo $node->hasAttribute( 'href' );
To get the href att...
Are HTTP cookies port specific?
...e network attacker. Similarly, cookies for a given host are shared across all the ports on that host, even though the usual "same-origin policy" used by web browsers isolates content retrieved via different ports.
And also:
8.5. Weak Confidentiality
Cookies do not provide isolation by p...
stdlib and colored output in C
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All modern terminal emulators use ANSI escape codes to show colours and other things.
Don't bother with libraries, the code is really simple.
More info is here.
Example in C:
#include <stdio.h>
#define ANSI_COLOR_RE...
#ifdef in C#
...ome method from compilation then you will have to exclude from compilation all pieces of code which call that method as well (sometimes you may load some classes at runtime and you cannot find the caller with "Find all references"). Otherwise there will be errors.
If you use conditional compilation...