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Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...ntegerCache.high (calculated at runtime with minimum value 127) then a pre-allocated (cached) object is returned. So when you use 127 as parameter, you're getting two references to same cached object and getting true in the comparison of the references.
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Can a class member function template be virtual?
...on as virtual, as you can see, it hard to determine function signature and allocate vtable entries.
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Why Qt is misusing model/view terminology?
...ical and/or textual output to the portion of the bitmapped display that is allocated to its application. The controller interprets the mouse and keyboard inputs from the user, commanding the model and/or the view to change as appropriate. Finally, the model manages the behavior and data of the appli...
Proper practice for subclassing UIView?
...rsion here:
If your class mostly consists of subviews, the right place to allocate them is in the init methods. For views, there are two different init methods that could get called, depending on if your view is being instantiated from code or from a nib/storyboard. What I do is write my own setup ...
What does the thread_local mean in C++11?
... (exists for the program duration) and dynamic (exists on the heap between allocation and deallocation).
Something that is thread-local is brought into existence at thread creation and disposed of when the thread stops.
Some examples follow.
Think of a random number generator where the seed must ...
Is it abusive to use IDisposable and “using” as a means for getting “scoped behavior” for exception
..."using", I don't know to ask the question; I assume that the "using" block allocates a resource, uses it for a bit, and politely disposes of it when it is done, not that the closing brace of the "using" block mutates my program state in an exceptional cirumstance when arbitrarily many program state ...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
... gold plate. If the software that you are using requires sixty bytes, then allocate sixty bytes. If there is a future release to your software that changes this, then you can worry about it when that release happens. You shouldn't be automatically installing functionality-changing updates.
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How do exceptions work (behind the scenes) in c++
... jne .L21
leave
ret
.L21:
movl $1, (%esp)
call __cxa_allocate_exception
movl $_ZN11MyExceptionD1Ev, 8(%esp)
movl $_ZTI11MyException, 4(%esp)
movl %eax, (%esp)
call __cxa_throw
.LFE8:
.size _Z20my_throwing_functionb, .-_Z20my_throwing_functionb
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Android accelerometer accuracy (Inertial navigation)
... Spatial databases are optimized for this using divide and conquer to only allocate sectors that are meaningful. It would be sort of like those MIT projects where the laser-equipped robot starts off with a black image, and paints the maze in memory by taking every turn, illuminating where all the wa...
Is recursion a feature in and of itself?
...airly expensive compared to iteration (in general) because it requires the allocation of a new stack frame. Not to mention you can get a stack overflow exception if the input is not valid too many times.
I believe the professor deducted points since recursion is considered a subject of its own and ...