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How to send a stacktrace to log4j?
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I never know what to stuff into the first String, usually I just end up doing log.error(e.getLocalizedMessage(), e) which is totally redundant. Does it handle a null for the first argument?
– Mark Peters
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What does $$ (dollar dollar or double dollar) mean in PHP?
Example is a variable declaration within a function:
7 Answers
7
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Is there an upside down caret character?
...P pages, many of which have tabular data with no sort capabilities at all. Whatever order the original developer used in the database query is what you're stuck with.
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Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
...re about:
As you can see, the memory pointers are the same. So we know what is going on now. Additionally you can find NSLayoutConstraint in view hierarchy. Since it is selected in View, it selected in Navigator also.
If you need you may also print it on console using address pointer:
(lldb)...
What does threadsafe mean?
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Eric Lippert has a nice blog post entitled What is this thing you call "thread safe"? about the definition of thread safety as found of Wikipedia.
3 important things extracted from the links :
“A piece of code is thread-safe if it functions correctly during
simulta...
What is the difference between Non-Repeatable Read and Phantom Read?
What is the difference between non-repeatable read and phantom read?
9 Answers
9
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Creating temporary files in Android
What's the best way to create a temporary file in Android?
6 Answers
6
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Catching java.lang.OutOfMemoryError?
...oice, then proceed to release resources and close down in a clean fashion. What's the worst that can happen? The JVM is dying (or already dead) anyway and by catching the Error there is at least a chance of cleanup.
The caveat is that you have to target the catching of these types of errors only in...
How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
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what about if there are two rows which have same 'home' and 'datetime' field values?
– Kemal Duran
Jun 1 '15 at 12:10
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Java: What is the difference between and ?
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What does CL stand for?
– Ciro Santilli 郝海东冠状病六四事件法轮功
Jul 11 '15 at 13:52
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