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What's the need of array with zero elements?
...ccess that
element or to generate a pointer one past it.
Or in other words, if you have:
struct something
{
/* other variables */
char data[];
}
struct something *var = malloc(sizeof(*var) + extra);
You can access var->data with indices in [0, extra). Note that sizeof(struct som...
How to style a checkbox using CSS
...
In other words, IE9 and later versions supports :checked.
– Blake Pettersson
Oct 8 '12 at 13:13
1
...
Why does calling a method in my derived class call the base class method?
...ustrates. If you want to change this behavior, you can attach different keywords to your method.
1. Abstract classes
The first one is abstract. abstract methods simply point to nowhere:
If your class contains abstract members, it also needs to be marked as abstract, otherwise the compiler will ...
Does PostgreSQL support “accent insensitive” collations?
...PY = simple );
ALTER TEXT SEARCH CONFIGURATION mydict
ALTER MAPPING FOR hword, hword_part, word
WITH unaccent, simple;
Which you can then index with a functional index,
-- Just some sample data...
CREATE TABLE myTable ( myCol )
AS VALUES ('fóó bar baz'),('qux quz');
-- No index required,...
CSS media queries: max-width OR max-height
...ed with the terminology associated with media query syntax
1. AND (and keyword)
Requires that all conditions specified must be met before the styling rules will take effect.
@media screen and (min-width: 700px) and (orientation: landscape) { ... }
The specified styling rules won't go into place ...
What is hashCode used for? Is it unique?
...ple/objects can theoretically still have the same
fingerprint. Or in other words. If you have two fingerprints that are the same.........then they need not both come from the same person/object.
Buuuuuut, the same person/object will always return the
same fingerprint.
Which means that if two objects...
Is recursion ever faster than looping?
...
@hmijail I think that a better word than "useful" is "true". Tail recursion isn't true recursion because it's just using function calling syntax to disguise unconditional branching, i.e. iteration. True recursion provides us with a backtracking stack. How...
Git commits are duplicated in the same branch after doing a rebase
... have already been pushed to a remote, which you then proceed to change (reword commit messages, reorder commits, squash commits, etc.)
Let's better understand what happened—here is an example:
You have a repository:
2a2e220 (HEAD, master) C5
ab1bda4 C4
3cb46a9 C3
85f59ab C2
4516164 C1
0e783a3...
javascript: recursive anonymous function?
...e function as a value and not a "function declaration" statement. In other words:
(function foo() { foo(); })();
is a stack-blowing recursive function. Now, that said, you probably don't may not want to do this in general because there are some weird problems with various implementations of Java...
Creating a singleton in Python
..._init__(*args, **kwargs)
to the if statement in Singleton.__call__.
A few words about metaclasses. A metaclass is the class of a class; that is, a class is an instance of its metaclass. You find the metaclass of an object in Python with type(obj). Normal new-style classes are of type type. Logger i...