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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.
...
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
...
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 ...
What does Ruby have that Python doesn't, and vice versa?
... actually a bit of a misnomer. Modules are basically classes sans the new, allocate methods. They work best as a way to share code on a per class/object basis, not as mechanism for partitioning libraries, or to share code across programs.
– Logan Capaldo
Jul 12...
“is” operator behaves unexpectedly with integers
...n documentation and we would've know all along!:
/* Small integers are preallocated in this array so that they
can be shared.
The integers that are preallocated are those in the range
-NSMALLNEGINTS (inclusive) to NSMALLPOSINTS (not inclusive).
*/
static PyLongObject small_ints[NSMALLNEGIN...
Is R's apply family more than syntactic sugar?
...u mean to set y to 1:1e6, not numeric(1e6) (a vector of zeroes). Trying to allocate foo(0) to z[0] over and over does not illustrate well a typical for loop usage. The message is otherwise spot on.
– flodel
Dec 1 '16 at 4:33
...
Adding gif image in an ImageView in android
...ixels.length < npix)) {
pixels = new byte[npix]; // allocate new pixel array
}
if (prefix == null) {
prefix = new short[MAX_STACK_SIZE];
}
if (suffix == null) {
suffix = new byte[MAX_STACK_...