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How can I programmatically check whether a keyboard is present in iOS app?
...tance;
}
+ (void)load
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
sharedInstance = [[self alloc] init];
[pool release];
}
- (BOOL)isVisible
{
return _isVisible;
}
- (void)didShow
{
_isVisible = YES;
}
- (void)didHide
{
_isVisible = NO;
}
- (id)init
{
...
How to create local notifications?
...n *)notification {
UIAlertView *notificationAlert = [[UIAlertView alloc] initWithTitle:@"Notification" message:@"This local notification"
delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
[notificationAlert show];
// NSLog(@"didReceiveLocalNotific...
What does 'const static' mean in C and C++?
... compiler is smart enough to use 42 whenever it sees foo, but it will also allocate space in the initialized data area for it. This is done because, as defined, foo has external linkage. Another compilation unit can say:
extern const int foo;
To get access to its value. That's not a good practice ...
Practical usage of setjmp and longjmp in C
...stroy the return stack (not only local variables) of routineC. So without allocating an exclusive stack (through alloca() after calling rountineB?) you will get in serious trouble with this example if used as a recipe.
– Tino
Apr 11 '15 at 19:12
...
How does LMAX's disruptor pattern work?
...as an extremely large array to take advantage of cache locality, eliminate allocation of new memory.
5 Answers
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C++: What is the size of an object of an empty class?
...
@krish_oza: you think wrong. When you allocate a variable on stack, it cannot occupy zero bytes (because different variables need different addresses), hence the size 1 minimum. After that, it is up to the compiler. Similarly with new; when the space is allocat...
iOS: Compare two dates
...STimeInterval distance
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"dd/MM/yyyy"];
[dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]
autorelease]];
NSString *stringDate = [dateFormatter stringF...
What exactly are unmanaged resources?
...
Some users rank open files, db connections, allocated memory, bitmaps, file streams etc. among managed resources, others among unmanaged. So are they managed or unmanaged?
My opinion is, that the response is more complex: When you open file in .NET, you probably use s...
What is the “->” PHP operator called and how do you say it when reading code out loud? [closed]
...
Note that the lexical token is not always what that token is usually referred to. For example, ::'s name is the "scope resolution operator" but is listed in that article as T_DOUBLE_COLON. I'll +1 to you when I get some more votes :)
...
UINavigationBar custom back button without title
... controller name
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];
Swift 2
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .Plain, target: nil, action: nil)
Swift 3
self.navigatio...