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Why is address zero used for the null pointer?
...s far as linguistic coincidences are concerned, arithmetic object has more letters in common with pointer arithmetic than arithmetic types. At the same time, the standard does talk about pointer value. The original poster probably meant integer representation of a pointer rather than pointer value, ...
What are the different usecases of PNG vs. GIF vs. JPEG vs. SVG?
...images can also be animated and have transparency.
Good for: Logos, line drawings, and other simple images that need to be small. Only really used for websites.
JPEG - Lossy / Direct
JPEGs images were designed to make detailed photographic images as small as possible by removing informati...
Correct format specifier to print pointer or address?
... platforms, that will include a leading 0x and on others it won't, and the letters could be in lower-case or upper-case, and the C standard doesn't even define that it shall be hexadecimal output though I know of no implementation where it is not.
It is somewhat open to debate whether you should ex...
Difference between a theta join, equijoin and natural join
...much any condition you like, for example on Products that have the first 2 letters similar, or that have a different price. In practice, this is rarely the case - in 95% of the cases you will join on an equality condition, which leads us to:
Equi Join = the most common one used in practice. The ex...
How to perform Callbacks in Objective-C
...ere's an example that keeps the concepts of delegates out, and just does a raw call back.
@interface Foo : NSObject {
}
- (void)doSomethingAndNotifyObject:(id)object withSelector:(SEL)selector;
@end
@interface Bar : NSObject {
}
@end
@implementation Foo
- (void)doSomethingAndNotifyObject:(id)obje...
Apache and Node.js on the Same Server
... static content. Node is fast, powerful, elegant, and a sexy tool with the raw power of V8 and a flat stack with no in-built dependencies.
I also want the ease/flexibility of Apache and yet the grunt and elegance of Node.JS, why can't I have both?
Fortunately with the ProxyPass directive in the A...
What does FETCH_HEAD in Git mean?
...for alternate ref backends, read them from a file generically in refs_read_raw_ref().
With Git 2.29 (Q4 2020), Updates to on-demand fetching code in lazily cloned repositories.
See commit db3c293 (02 Sep 2020), and commit 9dfa8db, commit 7ca3c0a, commit 5c3b801, commit abcb7ee, commit e5b9421, com...
How do I provide custom cast support for my class?
... static void Main(string[] args)
{
// Text containing russian letters - needs care with Encoding!
var text = "Привет, {0}!";
// Implicit conversion string --> EncodedString
Print(text, "world");
// Create EncodedString from System.String but us...
What's the standard way to work with dates and times in Scala? Should I use Java types or there are
...this. If I use DateTime.formatted("yyyyMMdd") I just get plain "yyyyMMdd" (letters not replaced with corresponding numbers) as response. If I use DateTime.formatted(DateTimeFormat.forPattern("yyyyMMdd")) - I get an error asking for a string argument.
– Ivan
Sep...
Why is Go so slow (compared to Java)?
...ement is one example),
you'll see the two languages are much
closer in raw performance than this
suite would indicate.
Still, there is room for improvement.
The compilers are good but could be
better, many libraries need major
performance work, and the garbage
collector isn't fast...