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Is Java really slow?
... specific areas where it can beat common compiled languages (if they use standard libraries).
There is no excuse for "slow" Java applications now. Developers and legacy code/libraries are to blame, far more than the language. Also, blame anything 'enterprise.'
In fairness to the "Java is slow" cro...
Best practices for copying files with Maven
I have config files and various documents that I want to copy from the dev environment to the dev-server directory using Maven2. Strangely, Maven does not seem strong at this task.
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Differences between strong and weak in Objective-C
...eference to it. Once that is no longer the case, the object gets destroyed and your weak property will automatically get set to nil. The most frequent use cases of weak references in iOS are:
delegate properties, which are often referenced weakly to avoid retain cycles, and
subviews/controls of a ...
Python AttributeError: 'module' object has no attribute 'Serial' [duplicate]
... edited Oct 28 '18 at 15:01
Andrea Corbellini
14.6k11 gold badge3939 silver badges5656 bronze badges
answered Jul 9 '12 at 22:21
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Change bootstrap navbar collapse breakpoint without using LESS
...r question, below 768px, the navbar will collapse, so apply it above 768px and below 1000px, just like that:
@media (min-width: 768px) and (max-width: 1000px) {
.collapse {
display: none !important;
}
}
This will hide the navbar collapse until the default occurrence of the bootstrap ...
Quick unix command to display specific lines in the middle of a file?
Trying to debug an issue with a server and my only log file is a 20GB log file (with no timestamps even! Why do people use System.out.println() as logging? In production?!)
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Clang optimization levels
...dvars -loop-idiom -loop-deletion -loop-unroll -memdep -memcpyopt -sccp -demanded-bits -bdce -dse -postdomtree -adce -barrier -rpo-functionattrs -globaldce -float2int -loop-accesses -loop-distribute -loop-vectorize -loop-load-elim -alignment-from-assumptions -strip-dead-prototypes -loop-sink -instsim...
How do I draw a grid onto a plot in Python?
I just finished writing code to make a plot using pylab in Python and now I would like to superimpose a grid of 10x10 onto the scatter plot. How do I do that?
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Why do we usually use || over |? What is the difference?
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If you use the || and && forms, rather than the | and & forms of these operators, Java will not bother to evaluate the right-hand operand alone.
It's a matter of if you want to short-circuit the evaluation or not -- most of the ti...
Creating an Android trial application that expires after a fixed time period
... run the app save the date/time to a file, database, or shared preferences and every time you run the app after that check to see if the trial period has ended. This is easy to circumvent because uninstalling and reinstalling will allow the user to have another trial period.
The second approach is...