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Where should @Service annotation be kept? Interface or Implementation?
... Spring Beans, and
have an injection point that use the interface for type based injection,
then you will get and NoUniqueBeanDefinitionException
(or you have a very special configurations setup, with Environment, Profiles or Qualifiers ...)
Conclusion: If you use @Component (or @Service, ...) ...
Can you attach a UIGestureRecognizer to multiple views?
... much like detecting that say we haven't used a variable, XCode could tell based on the code that we have passed the same recognizer to multiple views and could warn the coder.
– Zoltán Matók
Aug 18 '14 at 11:52
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Override devise registrations controller
I have added a field to the sign-up form that is based on a different model, see How do I use nested attributes with the devise model for the gory details. This part is working fine.
...
Return type of '?:' (ternary conditional operator)
...2 have class type, and the underlying class types are the same or one is a base class of the other: E1 can be converted to match E2 if the class of T2 is the same type as, or a base class of, the class of T1, and the cv-qualification of T2 is the same cv-qualification as, or a greater cv-qualificati...
How to dynamically update a ListView on Android [closed]
On Android, how can I a ListView that filters based on user input, where the items shown are updated dynamically based on the TextView value?
...
How do I declare and initialize an array in Java?
... called name ("name" is called the identifier). The literal "Type" is the base type, and the brackets mean this is the array type of that base. Array types are in turn types of their own, which allows you to make multidimensional arrays like Type[][] (the array type of Type[]). The keyword new says...
Rebasing a Git merge commit
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There are two options here.
One is to do an interactive rebase and edit the merge commit, redo the merge manually and continue the rebase.
Another is to use the --rebase-merges option on git rebase, which is described as follows from the manual:
By default, a rebase will simply dro...
RE error: illegal byte sequence on Mac OS X
...C treats strings as if each byte were its own character (no interpretation based on encoding rules is performed), with no regard for the - multibyte-on-demand - UTF-8 encoding that OS X employs by default, where foreign characters have multibyte encodings.
In a nutshell: setting LC_CTYPE to C cause...
Async/await vs BackgroundWorker
...h a process that's just waiting for results to become available.
The async-based approach to asynchronous programming is preferable to existing approaches in almost every case. In particular, this approach is better than BackgroundWorker for IO-bound operations because the code is simpler and you do...
Glorified classes in the Java language
...bunch of boilerplate) rather than reflection. In fact, there were many XML based and javadoc tag based implementations before annotations were introduced.
ClassLoader - it certainly has a privileged relationship with the JVM as there is no language way to load a class, although there is a bytecode w...