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Concurrent.futures vs Multiprocessing in Python 3
...ou use to get at those isn't a primary factor in bottom-line speed.
Edit: example
Here's the final code shown in the article you referenced, but I'm adding an import statement needed to make it work:
from concurrent.futures import ProcessPoolExecutor
def pool_factorizer_map(nums, nprocs):
# Let ...
How do I accomplish an if/else in mustache.js?
...s, else clauses, or for loops." Yeeeeaaaaaa....
– boxed
Nov 10 '15 at 13:25
7
@boxed, technicall...
Why isn't vector a STL container?
...
For space-optimization reasons, the C++ standard (as far back as C++98) explicitly calls out vector<bool> as a special standard container where each bool uses only one bit of space rather than one byte as a normal bool would (implementing a kind of "dynamic bitset"). In exchange for this opt...
How to prevent custom views from losing state across screen orientation changes
...implementing View#onSaveInstanceState and View#onRestoreInstanceState and extending the View.BaseSavedState class.
public class CustomView extends View {
private int stateToSave;
...
@Override
public Parcelable onSaveInstanceState() {
//begin boilerplate code that allows parent class...
How does MongoDB sort records when no sort order is specified?
...atural order) is an undefined implementation detail. Maintaining order is extra overhead for storage engines and MongoDB's API does not mandate predictability outside of an explicit sort() or the special case of fixed-sized capped collections which have associated usage restrictions. For typical wor...
How can I extract a good quality JPEG image from a video file with ffmpeg?
Currently I am using this command to extract the images:
2 Answers
2
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NSOperation vs Grand Central Dispatch
...very simply with NSOperationQueue that take a lot of work with pure GCD. (Examples: bandwidth-constrained queues that only run N operations at a time; establishing dependencies between operations. Both very simple with NSOperation, very difficult with GCD.) Apple's done the hard work of leveraging ...
Extract substring using regexp in plain bash
I'm trying to extract the time from a string using bash, and I'm having a hard time figuring it out.
4 Answers
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Best way to define private methods for a class in Objective-C
...ethod in Objective-C. However, starting in Objective-C 2.0 (meaning Mac OS X Leopard, iPhone OS 2.0, and later) you can create a category with an empty name (i.e. @interface MyClass ()) called Class Extension. What's unique about a class extension is that the method implementations must go in the sa...
How do you get the list of targets in a makefile?
...ve on @nobar's great approach as follows:
uses a more robust command to extract the target names, which hopefully prevents any false positives (and also does away with the unnecessary sh -c)
does not invariably target the makefile in the current directory; respects makefiles explicitly specified w...