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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...
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...
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() ...
File I/O in Every Programming Language [closed]
...
LOLCODE
The specs are sketchy to say the least, but I did the best I could. Let the downvoting begin! :) I still find it a fun exercise.
HAI
CAN HAS STDIO?
PLZ OPEN FILE "FILEIO.TXT" ITZ "TehFilez"?
AWSUM THX
BTW #There is no standard way to output to fi...
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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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....
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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How can I check for “undefined” in JavaScript? [duplicate]
...he existence of a property, regardless of its value, while the question at least appears to be asking how to test if the value of a variable is undefined. Perhaps a better example for me to choose would have been var foo; "foo" in window; this returns true while foo is definitely undefined.
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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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How to suppress Update Links warning?
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I've found a temporary solution that will at least let me process this job. I wrote a short AutoIt script that waits for the "Update Links" window to appear, then clicks the "Don't Update" button. Code is as follows:
while 1
if winexists("Microsoft Excel","This workb...