498 questions
1
vote
2
answers
87
views
What wrong with deallocating func?
I am currently learning lists, and I am trying to write a function that deallocates the memory. I tried, but even though it compiles, it returns a non-zero value. I don't understand why my program ...
- 139
0
votes
1
answer
177
views
Swift: deallocate modally presented view controller
I have a modally presented SearchviewController that contains a UISearchController.
When swiping down it gets deallocated, but only if the searchControllers searchBar is not in editing mode. Only if I ...
- 31
0
votes
1
answer
1k
views
when __NSDictionaryM dealloc crash
For a crash in my application, NSDictionary is an attribute of the model, and when the model executes the cxx_destruct function, crash occurs inside the NSDictionary.There's a place in the crash stack ...
- 1
3
votes
2
answers
4k
views
When is `deinit` exactly called? (in Swift)
When is deinit exactly called?
Is it like C++ guaranteed to be called when last reference gets out of scope (by return, throw or exit)?
Or is Swift using Garbage-Collector?
- 8,886
0
votes
2
answers
314
views
Manually how to deallocate an object (NSString / NSMutableString ,..) under ARC in Objective C
Initialised an Object (NSString / NSMutableArray) and set value for that. I need to deallocate the object, then have to assign a value to that object to get an error of that's already been ...
- 141
0
votes
1
answer
106
views
MultiThreaded delaying class deallocation
below i am defining a solution and using interval as a timer in background thread as follow :
@weakify(self)
//IMPORTANT:- Throttle is working exactly the same way debounce works in RX SO DO NOT USE ...
- 185
0
votes
2
answers
100
views
Speed up segues and Unwind segues
I am trying to speed up segues and unwind segues between view controllers. If I am doing anything fundamentally wrong please let me know or if I need to upload more code for context.
Here is a ...
- 606
1
vote
5
answers
864
views
EXC_BAD_ACCESS KERN_INVALID_ADDRESS for WKWebView dealloc
Why would the below stack trace throw a EXC_BAD_ACCESS KERN_INVALID_ADDRESS because of the WKWebView? I can't tell where this is happening either.
I dont know where this is happening but here is my ...
- 23.9k
0
votes
1
answer
1k
views
what does deallocation function in xv6's allocation function
in case 1 and 2, what does the deallocation function do in an allocation function?
case 1: if(mem == 0)
// does this condition mean physical memory has not space?
case 2: if(mappages(pgdir, (...
- 27
-1
votes
1
answer
970
views
Rust: memory deallocation for String [duplicate]
Do I need to deallocate memory manually in this case:
let mut s = String::new();
...somecode here...
s = String::new();
and is it the best way to erase content of the string?
- 39
0
votes
1
answer
297
views
Dealloc NSString causes crash
I am working on Objective-C application. There I have this snippet:
QString result;
NSString *tmp = nil;
tmp = [activeApp bundleIdentifier];
result = QString::fromNSString(tmp);
NSLog(@"...
- 855
0
votes
0
answers
74
views
Memory is not being relased when I go back and forth between view controllers
I have an app with a main view controller that has a uitableview that has a user listed in each cell. Each cell has a profile pic. Tapping the profile pic goes to that users profile page using ...
- 167
0
votes
1
answer
183
views
SJVideoPlayer Not Playing video Display black screen
I'm simply use following code but it display black screen.
SJVideoPlayer *videoPlayer = [SJVideoPlayer player];
videoPlayer.view.frame = CGRectMake(0, 20, 200, 200 * 9/16.0);
[self.view addSubview:...
- 1,833
0
votes
0
answers
61
views
When I Used [UITabBarController setSelectedIndex:] and - popToRootViewControllerAnimated:, the viewController not dealloc
When I Used [UITabBarController setSelectedIndex:] and - popToRootViewControllerAnimated:, for example:
- (void)backViewControllerAnimation:(BOOL)animation {
if ([self.navigationController ...
- 91
0
votes
1
answer
86
views
activity rotate deallocation
I have created a hello world simple activity and I started.I look at android profiler , When I rotate screen , in the heap (android profiler monitor) totally 2 MainActivity are shown . why first ...
- 621