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Android - Set fragment id

... You can't set a fragment's ID programmatically. There is however, a String tag that you can set inside the FragmentTransaction which can be used to uniquely identify a Fragment. As Aleksey pointed out, you can pass an ID to FragmentTransaction's add(int, Fragment) ...
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Why Func instead of Predicate?

... Well, actually you have to place that in the context of the guideline, which is about writing a LINQ provider. So yeah, for LINQ operators, the guideline is to use Func<> and Expression<> as parameters for the extension met...
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Why is `std::move` named `std::move`?

The C++11 std::move(x) function doesn't really move anything at all. It is just a cast to r-value. Why was this done? Isn't this misleading? ...
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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?

... RaisePropertyChanged("ViewModelCopyOfSomeProperty"); } But typically this is only needed if more than one object will be making changes to the Model's data, which is not usually the case. If you ever have a case where you don't actually have a reference to your Model property to attach t...
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How to add a custom loglevel to Python's logging facility

...for my application, as I don't think that debug() is sufficient. Additionally log(5, msg) isn't what I want. How can I add a custom loglevel to a Python logger? ...
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How to find all the subclasses of a class given its name?

I need a working approach of getting all classes that are inherited from a base class in Python. 10 Answers ...
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Determining Referer in PHP

...s the most reliable and secure way to determine what page either sent, or called (via AJAX), the current page. I don't want to use the $_SERVER['HTTP_REFERER'] , because of the (lack of) reliability, and I need the page being called to only come from requests originating on my site. Edit: I am...
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What is the command to list the available avdnames

... List all your emulators: emulator -list-avds Run one of the listed emulators: emulator @name-of-your-emulator where emulator is under: ${ANDROID_SDK}/tools/emulator – Dhiraj Himani Jun 16 ...
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Covariance, Invariance and Contravariance explained in plain English?

... say it is used to decide whether a method is overwritten or overloaded. All of the above. At heart, these terms describe how the subtype relation is affected by type transformations. That is, if A and B are types, f is a type transformation, and ≤ the subtype relation (i.e. A ≤ B means that ...
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What happens to a github student account's repositories at the end of 2 years?

... Ok, so the user can manually make the repo's public prior to or after the automatic downgrade if they do not desire to pay to access their code again. – indivisible Jun 23 '14 at 11:55 ...