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What's the best way to communicate between view controllers?
...tionDidFinishLoading {
MyBookWarehouse *myWarehouse = [[MyBookWarehouse alloc]init];
MyCheckoutController *myCheckout = [[MyCheckoutController alloc]init];
BookPickerViewController *bookPicker = [[BookPickerViewController alloc]
initWithWarehouse:m...
Why would you ever implement finalize()?
...ction be taken prior to collection? That just puts us back in the days of malloc/free.)
Other times you need the resource you think you're managing to be more robust. For example, why do you need to close that connection? It must ultimately be based on some kind of I/O provided by the system (socke...
-didSelectRowAtIndexPath: not being called
...after I implemented UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)]; [self.view addGestureRecognizer:tap];
– coolcool1994
Jul 4 '13 at 21:31
...
Array initialization syntax when not in a declaration
... dynamic. Java wants to know at declaration time how much memory should be allocated for the array. An ArrayList is much more dynamic and the size of it can vary over time.
If you initialize your array with the length of two, and later on it turns out you need a length of three, you have to throw a...
How to hide the “back” button in UINavigationController?
.... I could do something like:
UIViewController *newVC = [[UIViewController alloc] init];
//presumably would do some stuff here to set up the new view controller
newVC.navigationItem.hidesBackButton = YES;
[myNavController pushViewController:newVC animated:YES];
When the code finishes, the view con...
What is the garbage collector in Java?
... loop. This means that in every iteration, a little bit of memory is being allocated to make a String object.
Going back to the code, we can see that once a single iteration is executed, in the next iteration, the String object that was created in the previous iteration is not being used anymore --...
Can media queries resize based on a div element instead of the screen?
...
@DelightedD0D after my comment he changed the answer and I voted +1 for the change. The current answer it's OK to me because is telling that this is not possible with CSS only.
– ius
Jul 28 '17 at ...
HTTP header line break style
...ion 3, and that RFC references RFC5234, Appendix B.1 to define "CRLF" as %x0D %x0A.
However, recognizing that people will break the standard for whatever purposes, there is a "tolerance provision" in section 19.3 (note that it re-iterates the correct sequence):
The line terminator for message-h...
How do CUDA blocks/warps/threads map onto CUDA cores?
I have been using CUDA for a few weeks, but I have some doubts about the allocation of blocks/warps/thread.
I am studying the architecture from a didactic point of view (university project), so reaching peak performance is not my concern.
...
Why does sun.misc.Unsafe exist, and how can it be used in the real world?
...e-and-swap
The sun.misc.Unsafe functionality of the host VM can be used to allocate uninitialized objects and then interpret the constructor invocation as any other method call.
One can track the data from the native address.It is possible to retrieve an
object’s memory address using the java.lang...