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How to update a menu item shown in the ActionBar?
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Option #1: Try invalidateOptionsMenu(). I don't know if this will force an immediate redraw of the action bar or not.
Option #2: See if getActionView() returns anything for the affected MenuItem. It is possible that showAsAction simply automatically creates action views fo...
File changed listener in Java
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This is no longer true in Java 7: there's now an API for this that can hook into the OS's notification services: blogs.oracle.com/thejavatutorials/entry/…
– Arnout Engelen
Sep 29 '11 at 10:00
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How can I declare and use Boolean variables in a shell script?
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Footnotes
Miku's answer has since been edited and no longer contains (known) flaws.
Not an exhaustive list.
A valid command in this context means a command that exists. It doesn't matter if the command is used correctly or incorrectly. E.g. man woman would still be considered a valid command, ev...
In php, is 0 treated as empty?
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you should update your cheat sheet now I will give you some more... 0.0 = true, 0.00 = true, "0.0" = false
– Sayed Mohd Ali
Mar 6 '19 at 6:40
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ExecJS::RuntimeError on Windows trying to follow rubytutorial
...henson/execjs#execjs )
3) Actually fixing the issue / Learning - Use the knowledge of options 1 and 2 to search for other solutions. I can't tell you how many webpages I closed upon seeing options 1 or 2 was the accepted solution before actually finding information about the root issue we were hav...
How do I use $scope.$watch and $scope.$apply in AngularJS?
...e most common scenario and I'm sure you've seen it before, but you didn't know that this has created a watch in the background. Yes, it had! Using AngularJS directives (such as ng-repeat) can also create implicit watches.
Ad 2)
This is how you create your own watches. $watch service helps you to ru...
Rename multiple files based on pattern in Unix
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+1 Didn't even know about rename ... Now I can stop using a for loop with mv and sed ... Thanks!
– balpha
Jul 6 '09 at 11:27
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Couldn't register with the bootstrap Server
...st of interest, as it will tell you ASAP if the only solution is to reboot now or not:
Open Terminal and run this command: ps -Ael | grep Z. If you get two entries, one "(clang)" and the other your app or company name, you're hosed - reboot.
If you are a developer, enter a short bug and tell Apple...
What are the effects of exceptions on performance in Java?
... class is loaded by the VM) and it makes throw not quite as slow. I don't know which JVM uses this new, better technique...
...but are you writing in Java so your code later on only runs on one JVM on one specific system? Since if it may ever run on any other platform or any other JVM version (pos...
In MVC, how do I return a string result?
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I don't know how accurate this answer was back then, but currently ContentResult does if (!String.IsNullOrEmpty(ContentType)) before setting HttpContext.Response.ContentType. I'm seeing text/html with your first example, either that's...