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Understanding Fragment's setRetainInstance(boolean)

... Fragment's state will be retained across the configuration change. Specifically, "retained" means that the fragment will not be destroyed on configuration changes. That is, the Fragment will be retained even if the configuration change causes the underlying Activity to be destroyed. Will the fr...
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In JavaScript, does it make a difference if I call a function with parentheses?

I noticed a difference when calling a function with empty parentheses, or without any parentheses at all. However, I am not passing any arguments to the function so I wondered, what would be the difference between: ...
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Re-raise exception with a different type and message, preserving existing information

... and want to have a unified exception hierarchy for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly, if needed. But many...
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SET versus SELECT when assigning variables?

... SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SE...
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Need to reset git branch to origin version

... If you haven't pushed to origin yet, you can reset your branch to the upstream branch with: git checkout mybranch git reset --hard origin/mybranch (Make sure that you reference your latest commit in a separate branch, like you mention in your question) Note that...
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How can I provide multiple conditions for data trigger in WPF?

How can I provide multiple conditions for data trigger in WPF? 4 Answers 4 ...
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Boost Statechart vs. Meta State Machine

...ge (actually several). For example, using the eUML front-end, a transition can be described as Source + Event [Guard] / Action == Target MSM will make your compiler suffer for bigger state machines, so you will need a pretty recent compiler (g++ >= 4.x, VC >= 9) You can make yourself a bette...
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Is there a naming convention for MySQL?

...ou might want to consider how to deal with this. This is a bit of a corner case though! Point 4 - Similar to Point 3. You may want to introduce a number at the end of the foreign key name to cater for having more than one referencing column. Point 5 - I would avoid this. It provides you with littl...
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What is the best way to deal with the NSDateFormatter locale “feechur”?

...a!!" moment, sometimes it's more of a "Duh!!" This is the latter. In the category for initWithSafeLocale the "super" init was coded as self = [super init];. This inits the SUPERCLASS of NSDateFormatter but does not init the NSDateFormatter object itself. Apparently when this initialization is ski...
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Is module __file__ attribute absolute or relative?

... a file. The __file__ attribute is not present for C modules that are statically linked into the interpreter; for extension modules loaded dynamically from a shared library, it is the pathname of the shared library file. From the mailing list thread linked by @kindall in a comment to the question:...