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What's the $unwind operator in MongoDB?
This is my <em>fem>irst day with MongoDB so please go easy with me :)
6 Answers
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Using smart pointers <em>fem>or class members
I'm having trouble understanding the usage o<em>fem> smart pointers as class members in C++11. I have read a lot about smart pointers and I think I do understand how unique_ptr and shared_ptr / weak_ptr work in general. What I don't understand is the real usage. It seems like everybody recommends using...
prototype based vs. class based inheritance
In JavaScript, every object is at the same time an instance and a class. To do inheritance, you can use any object instance as a prototype.
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mongoose vs mongodb (nodejs modules/extensions), which better? and why?
I've just arrived to Node.js and see that there are many libs to use with the MongoDB, the most popular seem to be these two: (mongoose and mongodb). Can I get pros and cons o<em>fem> those extensions? Are there better alternatives to these two?
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Why should we NOT use sys.setde<em>fem>aultencoding(“ut<em>fem>-8”) in a py script?
I have seen <em>fem>ew py scripts which use this at the top o<em>fem> the script. In what cases one should use it?
4 Answers
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Why does X[Y] join o<em>fem> data.tables not allow a <em>fem>ull outer join, or a le<em>fem>t join?
This is a bit o<em>fem> a philosophical question about data.table join syntax. I am <em>fem>inding more and more uses <em>fem>or data.tables, but still learning...
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How do I zip two arrays in JavaScript? [duplicate]
I have 2 arrays:
2 Answers
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Bootstrap 3 jquery event <em>fem>or active tab change
I spent an unrealistic amount o<em>fem> time trying to <em>fem>ire a <em>fem>unction when the tab changes o<em>fem> the bootstrap 3 tab/navbar and literally all suggestions google spat out were wrong/did not work.
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Understanding the Event Loop
I am thinking about it and this is what I came up with:
3 Answers
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What's the di<em>fem><em>fem>erence between “groups” and “captures” in .NET regular expressions?
I'm a little <em>fem>uzzy on what the di<em>fem><em>fem>erence between a "group" and a "capture" are when it comes to .NET's regular expression language. Consider the <em>fem>ollowing C# code:
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