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What are .dex files in Android?
... files. But after .class files are generated, the “dx” tool is used to convert all .class files into a single .dex, or Dalvik Executable, file. It is the .dex file that is executed on the Dalvik VM. The .dex file has been optimized for memory usage and the design is primarily driven by sharing o...
javascript check for not null
...lsey". The double-not operator !! will remove more than just null. It will convert NaN and undefined into false as well. And that's why your array filters correctly when using the double not-operator !!.
– tfmontague
Aug 6 '16 at 20:50
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How can I define a composite primary key in SQL?
...rID)
);
The pair (QuestionID,MemberID) must then be unique for the table and neither value can be NULL. If you do a query like this:
SELECT * FROM voting WHERE QuestionID = 7
it will use the primary key's index. If however you do this:
SELECT * FROM voting WHERE MemberID = 7
it won't because...
Correct way to quit a Qt program?
How should I quit a Qt Program, e.g when loading a data file, and discovered file corruption, and user need to quit this app or re-initiate data file?
...
UTF-8 without BOM
...pt files that I need them to be saved in UTF-8 (without BOM), every time I convert them to the correct format in Notepad++ , they are reverted back to UTF-8 with BOM when I open them in Visual Studio. How can I stop VS2010 from doing that?
...
ImportError: No module named site on Windows
...h this problem, see my comment on the main question. Basically you need to convert PYTHONPATH to a windows-style path with export PYTHONPATH=$(cygpath -w $PYTHONPATH).
– robert
Aug 19 '14 at 13:13
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How to implement a tree data-structure in Java? [closed]
Is there any standard Java library class to represent a tree in Java?
24 Answers
24
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Directory-tree listing in Python
...would be better, but I guess a generator is more versatile since it can be converted to a list. It depends on whether you're looking for, versatility or something a little bit more streamlined.
– James Mchugh
Aug 9 '18 at 20:02
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How to bundle a native library and a JNI library inside a JAR?
...e in a static initializier of the main class to
calc the current os.arch and os.name
look for the library in the JAR file at the predefined location using Class.getResource(String)
if it exists, extract it to a temp file and load it with System.load(File).
I added functionality to do this for j...
How can I reverse a NSArray in Objective-C?
... take advantage of the built-in reverseObjectEnumerator method on NSArray, and the allObjects method of NSEnumerator:
NSArray* reversedArray = [[startArray reverseObjectEnumerator] allObjects];
allObjects is documented as returning an array with the objects that have not yet been traversed with n...