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java get file size efficiently

...m access is one of the major responsibilities of an OS. faqs.org/docs/linux_admin/buffer-cache.html To get good benchmarking results, the cache should be cleared before each run. – z0r Jul 6 '12 at 0:16 ...
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How update the _id of one MongoDB Document?

I want update an _id field of one document. I know it's not a really good pratice. But with some technical reason, I need update it. If I try to update it I get: ...
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How do I test an AngularJS service with Jasmine?

...hat passed // for logging? Let's make it String-readable... function _parseStuffIntoMessage(stuff) { var message = ""; if (typeof stuff !== "string") { message = JSON.stringify(stuff) } else { message = stuff; } return message; } /** * @summary * Wri...
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Convert any object to a byte[]

...t form: [Serializable] class GameConfiguration { public map_options_t enumMapIndex; public Int32 iPlayerAmount; private Int32 iGameID; } byte[] baPacket; GameConfiguration objGameConfClient = new GameConfiguration(); baPacket = BinModle...
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Why do people use __(double underscore) so much in C++

...mming in C++, Rules and Recommendations : The use of two underscores (`__') in identifiers is reserved for the compiler's internal use according to the ANSI-C standard. Underscores (`_') are often used in names of library functions (such as "_main" and "_exit"). In order to avoid collisions...
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What would a “frozen dict” be?

...ict(collections.Mapping): """Don't forget the docstrings!!""" def __init__(self, *args, **kwargs): self._d = dict(*args, **kwargs) self._hash = None def __iter__(self): return iter(self._d) def __len__(self): return len(self._d) def __getitem__...
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How to darken a background using CSS?

... image */ url(http://fc02.deviantart.net/fs71/i/2011/274/6/f/ocean__sky__stars__and_you_by_muddymelly-d4bg1ub.png); } Reference: linear-gradient() - CSS | MDN UPDATE: Not all browsers support RGBa, so you should have a 'fallback color'. This color will be most likely be solid (...
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import module from string variable

... The __import__ function can be a bit hard to understand. If you change i = __import__('matplotlib.text') to i = __import__('matplotlib.text', fromlist=['']) then i will refer to matplotlib.text. In Python 2.7 and Python ...
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What does [:] mean?

...ctly create slice() objects. If you need them anyway, NumPy provides the s_ helper as an alternative way to create them. – Sven Marnach Apr 7 '14 at 10:20 ...
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How to make my custom type to work with “range-based for loops”?

...C++ standard, is specified to expand to something equivalent to: for( range_declaration : range_expression ) becomes: { auto && __range = range_expression ; for (auto __begin = begin_expr, __end = end_expr; __begin != __end; ++__begin) { range_declaration = *...