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Any reason not to use '+' to concatenate two strings?
... a + b case. It does not exhibit O(n^2) time as one might suspect.
So at least in terms of performance, using + is fine.
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java.util.Date vs java.sql.Date
...ve with JDBC: Date class handling.
Basically databases usually support at least three forms of datetime fields which are date, time and timestamp. Each of these have a corresponding class in JDBC and each of them extend java.util.Date. Quick semantics of each of these three are the following:
jav...
SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)
...per" (or any other valid identity). This fixes the build error, however at least for me it doesn't fix the Keychain problem. I still get -34018 error code.
– Marcin
Jun 9 '14 at 12:43
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Animate change of view controllers without using navigation controller stack, subviews or modal cont
...nimations that replace a view w/ a different view must occur with views at least a level below the first view added to the window (e.g. window.rootViewController.view.anotherView).
I've implemented a simple container class I called TransitionController. You can find it at https://gist.github.com/13...
proper hibernate annotation for byte[]
...the problem is that I don't know what the problem is exactly. But I can at least say that nothing has changed since 3.5.0-Beta-2 (which is where a changed has been introduced)in the 3.5.x branch.
But my understanding of issues like HHH-4876, HHH-4617 and of PostgreSQL and BLOBs (mentioned in the ja...
Convert ArrayList to String[] array [duplicate]
... array. (Surprisingly, it is faster to do this than to preallocate ... at least, for recent Java releases. See https://stackoverflow.com/a/4042464/139985 for details.)
From a technical perspective, the reason for this API behavior / design is that an implementation of the List<T>.toArray() ...
Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
...iyuanRen: The issue is being able to reason locally about code. People (at least me) are trained to recognize locked regions as invariant maintaining, that is at the time you acquire the lock no other thread is modifying the state, so the invariants on the critical region hold. This is not a hard r...
Which Eclipse files belong under version control?
...eam doesn't unit test [or if they do, they don't do it effectively] but at least tell me they use source control! XD)
– BrainSlugs83
Oct 5 '14 at 20:52
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Custom events in jQuery?
...t’s not very exciting.
Trigger and Bind
What is exciting though (or at least what is exciting me) is the method by which the status gets relayed through the application. I’ve stumbled upon a largely un-discussed method of implementing a pub/sub system using jQuery’s trigger and bind methods....
Workflow for statistical analysis and report writing
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LCFD: Least Commonly Fouled-up Data
– William Doane
Oct 13 '09 at 16:28
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