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What is the difference between Strategy design pattern and State design pattern?
...
Honestly, the two patterns are pretty similar in practice, and the defining difference between them tends to vary depending on who you ask. Some popular choices are:
States store a reference to the context object that contai...
What is the difference between “ is None ” and “ ==None ”
...ison any way it chooses, and it
can choose to make comparison against
None mean something (which actually
makes sense; if someone told you to
implement the None object from
scratch, how else would you get it to
compare True against itself?).
Practically-speaking, there is not much diff...
What is the difference between “screen” and “only screen” in media queries?
...
Let's break down your examples one by one.
@media (max-width:632px)
This one is saying for a window with a max-width of 632px that you want to apply these styles. At that size you would be talking about anything smaller than a desktop screen in most cas...
Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...
First off, let me just say that Jon's answer is correct. This is one of the hairiest parts of the spec, so good on Jon for diving into it head first.
Second, let me say that this line:
An implicit conversion exists from a method group to a compatible delegate type
(emphasis added) i...
How to make a website secured with https
...e all you need is a correctly set up SSL certificate.
Is SSL and https one and the same..
Pretty much, yes.
Do I need to apply with someone to get
some license or something.
You can buy an SSL certificate from a certificate authority or use a self-signed certificate. The ones you can p...
Call a Server-side Method on a Resource in a RESTful Way
...an be not object-oriented, just using HTTP does not make a design RESTful. One may be caught up in the rush of thinking about their services in terms of actions and remote methods that should be called. No wonder this will mostly end up in a RPC-Style service (or a REST-RPC-hybrid). The first step i...
Is it better to use std::memcpy() or std::copy() in terms to performance?
...owever, after my first few attempts, I got results that varied wildly from one run to the next, so I'm guessing there was some sort of OS activity going on. I decided to start over.
Same compiler settings and flags. There is only one version of MD5, and it's faster than SHA-2, so I did 3000 loops o...
How do I base64 encode (decode) in C?
...
Here's the one I'm using:
#include <stdint.h>
#include <stdlib.h>
static char encoding_table[] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
...
What is the best collation to use for MySQL with PHP? [closed]
...en comparing characters in the language) and performance. The only special one is utf8_bin which is for comparing characters in binary format.
utf8_general_ci is somewhat faster than utf8_unicode_ci, but less accurate (for sorting). The specific language utf8 encoding (such as utf8_swedish_ci) cont...
uint8_t vs unsigned char
...imply a character, whereas in the context of a UTF8 string, it may be just one byte of a multibyte character. Using uint8_t could make it clear that one shouldn't expect a character at every position -- in other words that each element of the string/array is an arbitrary integer that one shouldn't m...