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Best Practices: Salting & peppering passwords?

...e provable and make sense in order for it to be considered secure. Additionally, it has to be implementable in a maintainable way. The most secure system that can't be maintained is considered insecure (because if any part of that security breaks down, the entire system falls apart). And peppers fi...
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SQLAlchemy: What's the difference between flush() and commit()?

... A Session object is basically an ongoing transaction of changes to a database (update, insert, delete). These operations aren't persisted to the database until they are committed (if your program aborts for some reason in mid-session transaction, any...
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Why does `True == False is False` evaluate to False? [duplicate]

... ">=" | "<=" | "<>" | "!=" | "is" ["not"] | ["not"] "in" which all have less precedence than and. (By the way, thanks for the grammar fix, that really helps us non native speakers). – jorgeca Jun 19 '13 at 22:19 ...
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DLL and LIB files - what and why?

...program to run properly - libraries. But why do compilers generate them at all? Wouldn't it be easier to just include all the code in a single executable? And what's the difference between DLL's and LIB's? ...
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Recursively list files in Java

How do I recursively list all files under a directory in Java? Does the framework provide any utility? 26 Answers ...
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Detect the Internet connection is offline?

...et may be to just fail gracefully, preserve the data, and alert the user.. allowing them to eventually fix the connection problem if there is one, and to continue using your app with a fair amount of forgiveness. Sidenote: You could check a reliable site like google for connectivity, but this may n...
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How to use the toString method in Java?

... object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method. The toString method fo...
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Gson: How to exclude specific fields from Serialization without annotations

... it's almost the same thing as an exclusion annotation as in it applies to all instances of that class. I wanted runtime dynamic exclusion. I some cases I want some fields excluded in order to provide a lighter/restricted response and in others I want the full object serialized ...
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Checking if sys.argv[x] is defined

...he end, the difference between try, except and testing len(sys.argv) isn't all that significant. They're both a bit hackish compared to argparse. This occurs to me, though -- as a sort of low-budget argparse: arg_names = ['command', 'x', 'y', 'operation', 'option'] args = dict(zip(arg_names, sys.a...
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Git Ignores and Maven targets

Anyone know if it is possible to ignore all the instances of a particular directory in a file structure managed by git. 5 ...