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Difference between “on-heap” and “off-heap”
...y point to). This is important because a direct ByteBuffer (the ByteBuffer.allocateDirect kind, not the MMap kind) will be collected by the GC and when it gets collected it's Deallocater will get triggered, effectively collecting the unmanaged memory as well.
– Nitsan Wakart
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Adding a UILabel to a UIToolbar
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Have a look into this
[[UIBarButtonItem alloc] initWithCustomView:yourCustomView];
Essentially every item must be a "button" but they can be instantiated with any view you require. Here is some example code. Note, since other buttons are typically on the toolbar,...
What C++ Smart Pointer Implementations are available?
...t calls delete upon destruction making them unacceptable for holding array allocated objects (new[]). It takes ownership of the pointer so two auto pointers shouldn't contain the same object. Assignment will transfer ownership and reset the rvalue auto pointer to a null pointer. Which leads to perha...
Should arrays be used in C++?
...to use traditional C arrays in C++, or should they be avoided, just like malloc ?
11 Answers
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In C#, why is String a reference type that behaves like a value type?
...e (in all implementations of the CLR as of yet) stored on the stack. Stack allocating strings would break all sorts of things: the stack is only 1MB for 32-bit and 4MB for 64-bit, you'd have to box each string, incurring a copy penalty, you couldn't intern strings, and memory usage would balloon, et...
Grab a segment of an array in Java without creating a new array on heap
...on't know of a way to do this directly with arrays without additional heap allocation, but the other answers using a sub-list wrapper have additional allocation for the wrapper only – but not the array – which would be useful in the case of a large array.
That said, if one is looking for bre...
Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar
... title of previous screen)
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"back_arrow.png"]
style:UIBarButtonItemStyleBordered
targe...
How to add a button to UINavigationBar?
...tton on a NavigationBar.
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleDone target:nil action:nil];
UINavigationItem *item = [[UINavigationItem alloc] initWithTitle:@"Title"];
item.rightBarButtonItem = rightButton;
item.hidesBackButton ...
Android emulator failed to allocate memory 8
...e it starts working. Source: stackoverflow.com/questions/7222906/failed-to-allocate-memory-8
– Juha Palomäki
Oct 7 '13 at 12:55
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show 1 mo...
How do I record audio on iPhone with AVAudioRecorder?
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- (void) startRecording{
UIBarButtonItem *stopButton = [[UIBarButtonItem alloc] initWithTitle:@"Stop" style:UIBarButtonItemStyleBordered target:self action:@selector(stopRecording)];
self.navigationItem.rightBarButtonItem = stopButton;
[stopButton release];
AVAudioSession *audioSession = [AVAudi...