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BackgroundWorker vs background Thread
I have a stylistic question about the choice of background thread implementation I should use on a windows form app. Currently I have a BackgroundWorker on a form that has an infinite (while(true)) loop. In this loop I use WaitHandle.WaitAny to keep the thread snoozing until something of inter...
Why doesn't java.util.Set have get(int index)?
...e typically the people who didn't pay attention in database class (or when reading the documentation or tutorials) when it was explained to them, up front, that query results do not have a guaranteed ordering.
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EXC_BAD_ACCESS signal received
... trying to access released objects.
To find out how to troubleshoot this, read this document:
DebuggingAutoReleasePool
Even if you don't think you are "releasing auto-released objects", this will apply to you.
This method works extremely well. I use it all the time with great success!!
In summa...
Should I instantiate instance variables on declaration or in the constructor?
...ually put in the constructor(s) by the compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constructor(s) by the compiler:
{
a = new A();
}
Check Sun's explanation ...
How to pass an array into jQuery .data() attribute
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@Alnitak Then I'm high, because I read pretty much the entire data section and many of the comments before posting. I just looked again even.
– John Green
May 20 '11 at 12:55
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setNeedsLayout vs. setNeedsUpdateConstraints and layoutIfNeeded vs updateConstraintsIfNeeded
...aints using setNeedsUpdateConstraints is pretty rare too, objc.io–a must read about autolayouts–says:
If something changes later on that invalidates one of your constraints, you should remove the constraint immediately and call setNeedsUpdateConstraints. In fact, that’s the only case where...
Specify an SSH key for git push for a given domain
...e cribbed together and tested with github the following approach, based on reading other answers, which combines a few techniques:
correct SSH config
git URL re-writing
The advantage of this approach is, once set up, it doesn't require any additional work to get it right - for example, you don't...
Nested classes' scope?
...lematic though. The way to deal with it is using a weak reference. You can read documentation on weakref (2.7) or weakref (3.5)
– guyarad
Sep 1 '16 at 5:37
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How to check if a string “StartsWith” another string?
...ethod (or if you're only supporting browsers and JavaScript engines that already have it), you can use it like this:
"Hello World!".startsWith("He"); // true
var haystack = "Hello world";
var prefix = 'orl';
haystack.startsWith(prefix); // false
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The difference between the Runnable and Callable interfaces in Java
...ing the Runnable and Callable interfaces when designing a concurrent thread in Java, why would you choose one over the other?
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