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Bash empty array expansion with `set -u`
I'm writing a bash script which has set -u , and I have a problem with empty array expansion: bash appears to treat an empty array as an unset variable during expansion:
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NullPointerException accessing views in onCreate()
...d-generated code.
The view is in the fragment layout (fragment_main.xml) and not in the activity layout (activity_main.xml). onCreate() is too early in the lifecycle to find it in the activity view hierarchy, and a null is returned. Invoking a method on null causes the NPE.
The preferred solution...
Installing multiple instances of the same windows service on a server
So we've produced a windows service to feed data to our client application and everything is going great. The client has come up with a fun configuration request that requires two instances of this service running on the same server and configured to point at separate databases.
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How to include another XHTML in XHTML using JSF 2.0 Facelets?
....xhtml. Do note that you don't need to repeat <html>, <h:head> and <h:body> inside the include file as that would otherwise result in invalid HTML.
You can use a dynamic EL expression in <ui:include src>. See also How to ajax-refresh dynamic include content by navigation menu...
(413) Request Entity Too Large | uploadReadAheadSize
...ystem with IIS 7.5.
One of the service methods has an 'object' as argument and I'm trying to send a byte[] which contains a picture.
As long as the file size of this picture is less then approx. 48KB, all goes well. But if I'm trying to upload a larger picture, the WCF service returns an error: (41...
How do I turn off the unlimited whitespace in IntelliJ editor?
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File menu -> Settings -> Editor -> General -> Virtual Space and uncheck 'Allow placement of caret after end of line' . You may also uncheck the other options in the Virtual Space panel.
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Difference between array_push() and $array[] =
... as PHP has to look up the function reference, find its position in memory and execute whatever code it defines.
Using $arr[] = 'some value'; does not require a function call, and implements the addition straight into the data structure. Thus, when adding a lot of data it is a lot quicker and resou...
“Cannot update paths and switch to branch at the same time”
... checkout -b option to create a new branch, check it out at the same time and set up tracking in one command.
11 Answers
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Average of 3 long integers
...ides all three values (it floors the values, so you 'lose' the remainder), and then divides the remainder:
long n = x / 3
+ y / 3
+ z / 3
+ ( x % 3
+ y % 3
+ z % 3
) / 3
Note that the above sample does not always work properly when h...
IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager
... is a known bug in the support package.
If you need to save the instance and add something to your outState Bundle you can use the following:
@Override
protected void onSaveInstanceState(Bundle outState) {
outState.putString("WORKAROUND_FOR_BUG_19917_KEY", "WORKAROUND_FOR_BUG_19917_VALUE");
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