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How many Activities vs Fragments?

...at most closely matches the tutorial mentioned in the question is the one called "Layout" in the app; or FragmentLayoutSupport in the source code. In this demo, the logic has been moved out of the Activity and into the Fragment. The TitlesFragment actually contains the logic for changing Fragments....
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Variable length (Dynamic) Arrays in Java

...ou want - which is inefficient and a pain for you. Fortunately, there are all kinds of built-in classes that implement common data structures, and other useful tools too. You'll want to check the Java 6 API for a full list of them. One caveat: ArrayList can only hold objects (e.g. Integers), not ...
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C++11 rvalues and move semantics confusion (return statement)

...equivalent to your first. The std::move on tmp is unnecessary and can actually be a performance pessimization as it will inhibit return value optimization. The best way to code what you're doing is: Best practice std::vector<int> return_vector(void) { std::vector<int> tmp {1,2,3,4,5...
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Android: How can I pass parameters to AsyncTask's onPreExecute()?

... // do stuff } // doInBackground() et al. } Then, when calling the task, do something like: new MyAsyncTask(true).execute(maybe_other_params); Edit: this is more useful than creating member variables because it simplifies the task invocation. Compare the code above with: MyA...
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What is “android:allowBackup”?

... For this lint warning, as for all other lint warnings, note that you can get a fuller explanation than just what is in the one line error message; you don't have to search the web for more info. If you are using lint via Eclipse, either open the lint war...
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Ant: How to execute a command for each file in directory?

..."> <echo message="${theFile}"/> </target> This will antcall the target "bar" with the ${theFile} resulting in the current file. share | improve this answer | ...
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How can I find WPF controls by name or type?

...t while testing or using this algorithm to check your work. There is a small error in Tri Q's Algorithm. After the child is found, if childrenCount is > 1 and we iterate again we can overwrite the properly found child. Therefore I added a if (foundChild != null) break; into my code to deal with...
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How to create the branch from specific commit in different branch

...f A, you won't get the changes introduced in B. Same here, you had two parallel branches master and dev, which you merged in dev. Branching out from a commit of master (older than the merge) won't provide you with the changes of dev. If you want to permanently integrate new changes from master i...
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How do you create a random string that's suitable for a session ID in PostgreSQL?

... random() gets called length times (like in many of the other solutions). Is there a more efficient way to choose from 62 characters each time? How does this perform compared to md5()? – ma11hew28 Feb 1...
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How do I fix the indentation of an entire file in Vi?

In Vim, what is the command to correct the indentation of all the lines? 16 Answers 16...