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Unique ways to use the Null Coalescing operator [closed]
...one call. This is really powerful when you have a method that needs two or more such substitutions!
– David A. Gray
Feb 28 '17 at 2:30
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Callback functions in C++
...ngs right is a task due to the library user and keeps the library slim and more generic.
Furthermore, callbacks can enable dynamic runtime behaviour.
Imagine some kind of game engine class which has a function that is fired, each time the users presses a button on his keyboard and a set of functi...
Best way to use multiple SSH private keys on one client
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getting the screen density programmatically in android?
...lso getResources().getDisplayMetrics().densityDpi
– amorenew
Jan 3 '17 at 8:29
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How to call an external command?
...s.run(["ls", "-l"])
The advantage of subprocess vs. system is that it is more flexible (you can get the stdout, stderr, the "real" status code, better error handling, etc...).
The official documentation recommends the subprocess module over the alternative os.system():
The subprocess module p...
When to prefer JSON over XML?
...t you can
use.
At the same time evaluating JSON on
the client-side will be more
efficient, and therefore faster.
JSON serialization produces shorter
strings than XML. Using JSON will
reduce the amount of data running
across the wire and improve
performance in that respect.
Here's some further read...
Print only?
...sing some additional display:none styling for selected items but perhaps a more general solution is achievable by some combination of also forcing heights, overflow:none and absolute positioning for all divs or something.
– Malcolm MacLeod
May 17 '13 at 5:52
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Java / Android - How to print out a full stack trace?
...Log.d("myapp", Log.getStackTraceString(new Exception()));
Note that ...x more at the end does not cut off any information from the stack trace:
(This indicates) that the remainder of the stack trace for this exception matches the indicated number of frames from the bottom of the stack trace of...
Can we have functions inside functions in C++?
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stdlib and colored output in C
...and other things.
Don't bother with libraries, the code is really simple.
More info is here.
Example in C:
#include <stdio.h>
#define ANSI_COLOR_RED "\x1b[31m"
#define ANSI_COLOR_GREEN "\x1b[32m"
#define ANSI_COLOR_YELLOW "\x1b[33m"
#define ANSI_COLOR_BLUE "\x1b[34m"
#define ANSI...