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How to use timeit module
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I can only add that how you allocate your budget of 7000 executions (e.g., .repeat(7, 1000) vs. .repeat(2, 3500) vs .repeat(35, 200) should depend on how the error due to system load compares to the error due to input variability. In the extreme case if...
Why use static_cast(x) instead of (int)x?
...4 bytes
Since this results in a 4-byte pointer pointing to 1 byte of allocated
memory, writing to this pointer will either cause a run-time error or
will overwrite some adjacent memory.
*p = 5; // run-time error: stack corruption
In contrast to the C-style cast, the static cast will...
Should IBOutlets be strong or weak under ARC?
...&& IsEmpty(self.zip.text)) {
id geocoder = [[geocoderClass alloc] init];
[geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray *placemarks, NSError *error) {
if (self.zip && IsEmpty(self.zip.text)) {
self.zip.text = [[pla...
Using {} in a case statement. Why?
...l switch cases.
Micro optimizations- scope for a really expensive resource allocated variable that you want to destruct as soon as you leave the scope of the case, or even a more spaghetti scenario of the "GOTO" command usage.
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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...anipulate a few bytes on the top of the stack. A threat creation means: 1. allocating a stack, 2. performing a syscall, 3. creating data structures in the kernel and linking them up, grapping locks along the way, 4. waiting for the scheduler to execute the thread, 5. switching context to the thread....
What ports does RabbitMQ use?
...d by Erlang distribution for inter-node and CLI tools communication and is allocated from a dynamic range (limited to a single port by default, computed as AMQP port + 20000). See networking guide for details.
15672: HTTP API clients and rabbitmqadmin (only if the management plugin is enabled)
61...
How can I decompress a gzip stream with zlib?
...ess that can vary according to data entropy. Is there a way to dynamically allocate more space to output buffer when needed ? Thanks
– Zohar81
Jan 22 '19 at 12:33
add a commen...
How to return smart pointers (shared_ptr), by reference or by value?
... N strings in the vector, each copy
could require as many as N+1 memory allocations and a whole slew of cache-unfriendly data accesses > as the string contents are copied.
Rather than confront that sort of anxiety, I’ve often fallen back on pass-by-reference to avoid
needless copies:
...
Synchronization vs Lock
...r can there be barging? Method level synchronization ensures fair or FIFO allocation of the lock. Using
synchronized(foo) {
}
or
lock.acquire(); .....lock.release();
does not assure fairness.
If you have lots of contention for the lock you can easily encounter barging where newer requests ...
Why is there no Constant feature in Java?
...calling some method with side effects. final is somewhat similair to stack allocation of C++ in terms of refering to an object rather than a pointer, but that's all it is. This is ofcourse in addition to what dom0 already said.
– Tim
Mar 28 '16 at 18:22
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