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Unmangling the result of std::type_info::name
...o abi::__cxa_demangle() is successful, returns a pointer to a local, stack allocated array... ouch!
Also note that if you provide a buffer, abi::__cxa_demangle() assumes it to be allocated on the heap. Allocating the buffer on the stack is a bug (from the gnu doc): "If output_buffer is not long enou...
Constant Amortized Time
... takes constant time (that is, O(1)). But each time the array is full, you allocate twice as much space, copy your data into the new region, and free the old space. Assuming allocates and frees run in constant time, this enlargement process takes O(n) time where n is the current size of the array.
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Java Desktop application: SWT vs. Swing [closed]
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@JanTobola It's plain wrong. Native components use memory allocated on the native heap, not only on the Java heap. I've worked on large GUIs using Netbeans Platform, Eclipse RCP, SWT and Swing.There were some serious concerns of memory footprint in Swing in very early versions of Ja...
Internal typedefs in C++ - good style or bad style?
... trait classes, as they provide a sensible default. Consider the new std::allocator_traits<Alloc> class... you don't have to specialize it for every single allocator you write, because it simply borrows the types directly from Alloc.
– Dennis Zickefoose
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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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Android Studio - How to increase Allocated Heap Size
...ge. The memory usage indicated at the bottom right of the program says my allocated heap is maxed at 494M.
22 Answers
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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...
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...
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...
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,...