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Select the values of one property on all objects of an array in PowerShell
...ions; it is a faster - all-in-memory-at-once - alternative to the pipeline-based ForEach-Object cmdlet (%).
Comparing the performance of the various approaches
Here are sample timings for the various approaches, based on an input collection of 10,000 objects, averaged across 10 runs; the absolute...
Check if OneToOneField is None in Django
...n < 3.2, hasattr will swallow all exceptions that happen during the database lookup, and not just DoesNotExist. This is probably broken, and not what you want.
– Pi Delport
Mar 22 '13 at 12:45
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File Upload in WebView
...tJavaScriptEnabled(true);
web.loadUrl("http://www.script-tutorials.com/demos/199/index.html");
web.setWebViewClient(new myWebClient());
web.setWebChromeClient(new WebChromeClient()
{
//The undocumented magic method override
//Eclipse will swear at you if y...
Twitter Bootstrap 3.0 how do I “badge badge-important” now
...h either alert-danger or progress-bar-danger.
It looks like this: Bootply Demo.
You might combine the CSS class badge with alert-* or progess-bar-* to color them:
With class="badges alert-*"
<span class="badge alert-info">badge</span> Info
<span class="badge alert-success"&g...
Get a list of all threads currently running in Java
...ick'n'dirty test showed, it's about 70-80 times faster than the stacktrace-based solution. For monitoring, a small performance imprint is essential, as you you'll want to keep the effects on the monitored system as small as possible (Heisenberg strikes again :) For debugging, where you may need more...
resizes wrong; appears to have unremovable `min-width: min-content`
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Why can't static methods be abstract in Java?
... Unfortunately Java doesn't let you specify that when creating an abstract base class (or an interface).
– Michael Carman
Mar 29 '11 at 20:10
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Any reason to clean up unused imports in Java, other than reducing clutter?
...lain this. After attempting to increase memory settings (this is running a 64 bit JVM on a 64 bit CentOS!) to something well beyond where the clients could compile, I examined the checkins one by one.
There was an improper import that a developer had used and abandoned (they used the class, auto-im...
Locking a file in Python
...olutions online, but most fail for my purposes as they are often only Unix based or Windows based.
13 Answers
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What are the rules for calling the superclass constructor?
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Base class constructors are automatically called for you if they have no argument. If you want to call a superclass constructor with an argument, you must use the subclass's constructor initialization list. Unlike Java, C++...