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How to initialize log4j properly?

...;) See also: Short introduction to log4j at Apache site Apache: Logging Services: FAQ at Apache site share | improve this answer | follow | ...
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Booleans, conditional operators and autoboxing

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Underscore vs Double underscore with variables and methods [duplicate]

... Explanation: People coming from a C++/Java background are especially prone to overusing/misusing this "feature". But __private names don't work the same way as in Java or C++. They just trigger a name mangling whose purpose is to prevent accidental namespace collisions in subclasses...
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Using .sort with PyMongo

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Hudson vs Jenkins in 2012 [closed]

...awaguchi (the creator of Hudson) now works. Cloudbees now even have a free service for hosting GitHub hosted projects in their cloud. They let your OSS projects build for free! :) Jenkins has improved it's support for the cloud. As mentioned above, Cloudbees also provide this SaaS in the cloud. I a...
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Accessing dict keys like an attribute?

...__init__(*args, **kwargs) self.__dict__ = self Some pros: It actually works! No dictionary class methods are shadowed (e.g. .keys() work just fine. Unless - of course - you assign some value to them, see below) Attributes and items are always in sync Trying to access non-existent key as an...
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List attributes of an object

...ict__ Then you can test what type is with type() or if is a method with callable(). share | improve this answer | follow | ...
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Proper way to declare custom exceptions in modern Python?

...tionError(Exception): def __init__(self, message, errors): # Call the base class constructor with the parameters it needs super(ValidationError, self).__init__(message) # Now for your custom code... self.errors = errors That way you could pass dict of error me...
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Show pop-ups the most elegant way

...arJS modals so far I believe that the most elegant approach is a dedicated service to which we can provide a partial (HTML) template to be displayed in a modal. When we think about it modals are kind of AngularJS routes but just displayed in modal popup. The AngularUI bootstrap project (http://an...
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Python's equivalent of && (logical-and) in an if-statement

... different name in Python. The logical operators && and || are actually called and and or. Likewise the logical negation operator ! is called not. So you could just write: if len(a) % 2 == 0 and len(b) % 2 == 0: or even: if not (len(a) % 2 or len(b) % 2): Some additional information (...