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Why doesn't JavaScript have a last method? [closed]
Its kinda weird that the JavaScript Array class does not offer a last method to retrieve the last element of an array. I know the solution is simple (Ar[Ar.length-1] ), but, still, this is too frequently used.
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C++ static virtual members?
... further and say it is not meaningfull.
A static member is something that does not relate to any instance, only to the class.
A virtual member is something that does not relate directly to any class, only to an instance.
So a static virtual member would be something that does not relate to any in...
iOS - Dismiss keyboard when touching outside of UITextField
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This works but what it does is it also disables or makes navigation bar buttons as unclickable. So is there a work around for this?
– Parth Bhatt
Mar 15 '11 at 9:20
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When do we have to use copy constructors?
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The copy constructor generated by the compiler does member-wise copying. Sometimes that is not sufficient. For example:
class Class {
public:
Class( const char* str );
~Class();
private:
char* stored;
};
Class::Class( const char* str )
{
stored = new cha...
Understanding typedefs for function pointers in C
...tions that take a single integer and return nothing. One of them actually doesn't return at all thanks to the exit(1); but the other does return after printing a message. Be aware that the C standard does not permit you to do very much inside a signal handler; POSIX is a bit more generous in what ...
Is there a `pointer-events:hoverOnly` or similar in CSS?
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this does 'work' - however it doesn't allow click through to an element below (at least not when that element is a YouTube video) - which is probably the only reason anybody would need that behavior in the first place
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How do I best silence a warning about unused variables?
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You can put it in "(void)var;" expression (does nothing) so that a compiler sees it is used. This is portable between compilers.
E.g.
void foo(int param1, int param2)
{
(void)param2;
bar(param1);
}
Or,
#define UNUSED(expr) do { (void)(expr); } while (0)
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Do interfaces inherit from Object class in java
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Object is a supertype of any interface [1]
However, an interface does not implements, extends, or, "inherit from" Object.
JLS has a special clause to add Object methods into interfaces [2]
[1] http://java.sun.com/docs/books/jls/third_edition/html/typesValues.html#4.10.2
[2] http://java....
Why is volatile needed in C?
...ble to the compiler */
}
The compiler is allowed to notice the loop body does not touch the quit variable and convert the loop to a while (true) loop. Even if the quit variable is set on the signal handler for SIGINT and SIGTERM; the compiler has no way to know that.
However, if the quit variable...
A type for Date only in C# - why is there no Date type?
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A big advantage of a dedicated Date class is that it doesn't suffer from the complexities of time zones and daylight saving time.
– Dimitri C.
May 24 '12 at 7:48
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