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What's the $unwind operator in MongoDB?

...t" : [ { "_id" : ObjectId("4e6e4ef557b77501a49233f6"), "title" : "this is my title", "author" : "bob", "tags" : "fun" }, { "_id" : ObjectId("4e6e4ef557b7750...
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Using smart pointers for class members

... 202 A unique_ptr would not work because of getDevice(), right? No, not necessarily. What is im...
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Modify tick label text

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ICollection Vs List in Entity Framework

... Anthony PegramAnthony Pegram 111k2424 gold badges200200 silver badges240240 bronze badges 3 ...
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How can I parse a CSV string with JavaScript, which contains comma in data?

... +50 Disclaimer 2014-12-01 Update: The answer below works only for one very specific format of CSV. As correctly pointed out by DG in the c...
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Convert timestamp to date in MySQL query

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xpath find if node exists

... | edited Apr 20 '09 at 11:33 answered Apr 20 '09 at 11:26 ...
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Why is parenthesis in print voluntary in Python 2.7?

... 107 In Python 2.x print is actually a special statement and not a function*. This is also why it c...
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What do the python file extensions, .pyc .pyd .pyo stand for?

....pyc’ or ‘.pyo’ file directly on the command line. Note: On 2015-09-15 the Python 3.5 release implemented PEP-488 and eliminated .pyo files. This means that .pyc files represent both unoptimized and optimized bytecode. ...
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What is a “symbol” in Julia?

... answered May 5 '14 at 21:30 StefanKarpinskiStefanKarpinski 25.7k88 gold badges6767 silver badges9292 bronze badges ...