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Detect if value is number in MySQL
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The accepted answer is really clever, but this answer is more direct, and I think it should be the accepted solution.
– pedromanoel
Oct 30 '13 at 15:50
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Is null an Object?
...is only an object if it is equal to or subclasses java.lang.Object. Practically - yes. You can't create a class that is not a subclass of java.lang.Object, but I never thought about it from a more philosophical point of view
– Andreas Dolk
Dec 12 '09 at 22:23
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Android: AsyncTask vs Service
... accomplish the same task with either an AsyncTask or a Service however usually one is better suited to a task than the other.
AsyncTasks are designed for once-off time-consuming tasks that cannot be run of the UI thread. A common example is fetching/processing data when a button is pressed.
Servi...
Show SOME invisible/whitespace characters in Eclipse
A long while back I transitioned to doing all my web application development in Eclipse from BBEdit. But I miss one little feature from BBEdit. I used to be able to show invisible characters like tabs but not show other invisibles like spaces. I know that I can bulk turn all of these on in Eclipse, ...
What is a “thread” (really)?
... to find a good definition, and get an understanding, of what a thread really is.
10 Answers
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jQuery: select an element's class and id at the same time?
... yes you can specify a selector that has to match ID and class (and potentially tag name and anything else you want to throw in).
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Terminal Multiplexer for Microsoft Windows - Installers for GNU Screen or tmux [closed]
...terminal multiplexer for Microsoft Windows. I was unable to locate the installers for Microsoft Windows for both tmux and GNU Screen.
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How to start two threads at “exactly” the same time
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// Now if we block on the gate from the main thread, it will open
// and all threads will start to do stuff!
gate.await();
System.out.println("all threads started");
This doesn't have to be a CyclicBarrier, you could also use a CountDownLatch or even a lock.
This still can't make sure that ...
Maven and adding JARs to system scope
...ption) specify the proper repository (if one exists) so it can be automatically downloaded by maven
In either case, remove the <systemPath> tag from the dependency
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How do you copy a record in a SQL table but swap out the unique id of the new row?
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Any fields not specified should receive their default value (which is usually NULL when not defined).
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