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What is NoSQL, how does it work, and what benefits does it provide? [closed]
...y is it?
On one hand, a specific system, but it has also become a generic word for a variety of new data storage backends that do not follow the relational DB model.
How does it work?
Each of the systems labelled with the generic name works differently, but the basic idea is to offer better scalab...
Emacs mode for Stack Overflow's markdown
...upport for reading a subset of org-mode and can output markdown.
In other words, you can keep writing in org-mode, including writing italics /like this/, and then export to markdown.
From emacs you can convert to markdown by selecting the region, hitting C-u M-S-\ and typing pandoc -r org -t markdo...
Unknown file type MIME?
...ave to specify a MIME type if the uploaded file has no extension?
In other words is there a default general MIME type?
3 An...
How to prove that a problem is NP complete?
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To show a problem is NP complete, you need to:
Show it is in NP
In other words, given some information C, you can create a polynomial time algorithm V that will verify for every possible input X whether X is in your domain or not.
Example
Prove that the problem of vertex covers (that is, for some ...
Is Ruby pass by reference or by value?
...ually not pass-by-value or pass-by-reference in the strict CS sense of the words. What he was missing is that the "values" you're passing are references. I felt that just saying "It's pass-by-value" would be pedantic and do the OP a disservice, as that isn't actually what he meant. But thanks for th...
Does JavaScript have the interface type (such as Java's 'interface')?
... mingle together unless you're treating them as generic animals. In other words, even though the interface is fluid, it's still there; it's often an error to pass a dog to code that expects it to quack and fly in the first place.
But if you're sure you're doing the right thing, you can work around...
When is a language considered a scripting language? [closed]
...ard to script. C is somewhere in the middle, because although it has a keyword (system) for calling out, it also saddles the user with lots of cruft before you can get there.
– nomen
May 17 '14 at 16:58
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Is unsigned integer subtraction defined behavior?
...an see, (unsigned)0 - (unsigned)1 equals -1 modulo UINT_MAX+1, or in other words, UINT_MAX.
Note that although it does say "A computation involving unsigned operands can never overflow", which might lead you to believe that it applies only for exceeding the upper limit, this is presented as a motiv...
Why can't we have static method in a (non-static) inner class?
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The word bug...I do not think that word means what you think it means.
– Seth Nelson
Jan 17 '14 at 23:28
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The static keyword and its various uses in C++
The keyword static is one which has several meanings in C++ that I find very confusing and I can never bend my mind around how its actually supposed to work.
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