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Fragment MyFragment not attached to Activity
.../reference/android/app/… ...there's also isDetached(), that was added on API level 13
– Lucas Jota
Mar 21 '14 at 12:42
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C# Lambda expressions: Why should I use them?
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Expression trees are a very powerful new feature of C# 3.0 that allow an API to look at the structure of an expression instead of just getting a reference to a method that can be executed. An API just has to make a delegate parameter into an Expression<T> parameter and the compiler will gen...
Changing overflow icon in the action bar
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This will crash on tablets running Android 3.0 (API 11), because it doesn't like people defining the style "android:actionOverflowButtonStyle" (probably platform bug). So you have to use different styles in values-v11/styles.xml and values-v15/styles.xml.
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Extending Angular Directive
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@Ciel The directive API info has apparently been moved to the $compile doc here
– Dan
Sep 4 '14 at 18:06
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Persistence unit as RESOURCE_LOCAL or JTA?
...er to a unit of type RESOURCE_LOCAL
You must use the
EntityTransaction API to begin/commit around
every call to your EntityManger Calling
entityManagerFactory.createEntityManager() twice results in
two separate EntityManager instances and therefor
two separate PersistenceContexts/Caches....
Convert timestamp in milliseconds to string formatted time in Java
...al long timestamp = new Date().getTime();
// with java.util.Date/Calendar api
final Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(timestamp);
// here's how to get the minutes
final int minutes = cal.get(Calendar.MINUTE);
// and here's how to get the String representation
final String t...
How to prevent a dialog from closing when a button is clicked
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EDIT: This only works on API 8+ as noted by some of the comments.
This is a late answer, but you can add an onShowListener to the AlertDialog where you can then override the onClickListener of the button.
final AlertDialog dialog = new AlertDialog....
C++ Exceptions questions on rethrow of original exception
... MWE on GitHub, where a backtrace would look something like this:
Library API: Exception caught in function 'api_function'
Backtrace:
~/Git/mwe-cpp-exception/src/detail/Library.cpp:17 : library_function failed
~/Git/mwe-cpp-exception/src/detail/Library.cpp:13 : could not open file "nonexistent.txt"...
What Java ORM do you prefer, and why? [closed]
... I vote Hib too, but with an important addition: we should use JPA API only even if JPA implementation is in fact provided by Hib.
– Vladimir Dyuzhev
Jan 17 '09 at 1:24
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Difference between File.separator and slash in paths
...r documented." It's not a feature of the JVM, it's a feature of Windows NT API.
– Powerlord
Mar 10 '10 at 14:36
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