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Diff files present in two different directories

...compare all the files present in both the directories using the diff command. Is there a simple command line option to do it, or do I have to write a shell script to get the file listing and then iterate through them? ...
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Define: What is a HashSet?

... HashSet holds a set of objects, but in a way that it allows you to easily and quickly determine whether an object is already in the set or not. It does so by internally managing an array and storing the object using an index which is calculated from the hashcode of the object. Take a look here Hash...
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Should I use @EJB or @Inject

I have found this question: What is the difference between @Inject and @EJB but I did not get any wiser. I have not done Java EE before nor do I have experience with dependency injection so I do not understand what I should use? ...
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Django: Get list of model fields?

....AutoField: id>, <django.db.models.fields.DateField: created>... and Organisation._meta.get_fields() (<ManyToOneRel: crm.activity>, <django.db.models.fields.AutoField: id>, <django.db.models.fields.DateField: created>... 2) From instance from posts.model import BlogPost ...
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Create folder with batch but only if it doesn't already exist

... exist. Note that this existence test will return true only if VTS exists and is a directory. If it is not there, or is there as a file, the mkdir command will run, and should cause an error. You might want to check for whether VTS exists as a file as well. ...
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Python, compute list difference

...vation is important Roman Bodnarchuk may have a better approach. For speed and pure set-like behavior this one seems better. – Bryan P Feb 13 '15 at 23:01 8 ...
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int a[] = {1,2,}; Weird comma allowed. Any particular reason?

... It makes it easier to generate source code, and also to write code which can be easily extended at a later date. Consider what's required to add an extra entry to: int a[] = { 1, 2, 3 }; ... you have to add the comma to the existing line and add a new line....
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SetUnhandledExceptionFilter and the C/C++ Runtime Library - C/C++ - 清...

SetUnhandledExceptionFilter and the C/C++ Runtime LibrarySetUnhandledExceptionFilter-and-the-C-C-Runtime-LiThis article presents a fix for SetUnhandledExceptionFilter to work with the CRT.Download source code - 30.9 KBInt...This article presents a fix for SetUnhandledExceptionFilter to work with the...
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Globally catch exceptions in a WPF application?

...s of it may throw exceptions at runtime. I'd like to globally catch any unhandled exception and log them, but otherwise continue program execution as if nothing happened (kinda like VB's On Error Resume Next ). ...
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Dilemma: when to use Fragments vs Activities:

...tivity can hold all duplicated elements to save you time in creating them, and you can simply replace parts of the box. But don't forget that you always need a box container (Activity) or your parts will be dispersed. So one box with parts inside. Take care not to misuse the box. Android UX exper...