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What is a StackOverflowError?
...nt message. Here you've not explicitly called yourself, but the OS/VM has done it for you.
To deal with them, you'll need to examine your code. If you've got functions that call themselves then check that you've got a terminating condition. If you have, then check that when calling the function you...
Differences between Emacs and Vim
Without getting into a religious argument about why one is better than the other, what are the practical differences between Emacs and Vim? I'm looking to learn one or the other, but I realize the learning curve for each is high and I can't decide. I have never used an editor of this type (I've al...
Default value to a parameter while passing by reference in C++
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You can do it for a const reference, but not for a non-const one. This is because C++ does not allow a temporary (the default value in this case) to be bound to non-const reference.
One way round this would be to use an actual instance as the default:
static int AVAL = 1;
void f( in...
How to write an inline IF statement in JavaScript?
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You don't necessarily need jQuery. JavaScript alone will do this.
var a = 2;
var b = 3;
var c = ((a < b) ? 'minor' : 'major');
The c variable will be minor if the value is true, and major if the value is false.
This is known as a Conditional (ternary) Operato...
nodeJs callbacks simple example
can any one give me a a simple example of nodeJs callbacks, I have already searched for the same on many websites but not able to understand it properly, Please give me a simple example.
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Move assignment operator and `if (this != &rhs)`
..., other.mArray + mSize, mArray);
}
return *this;
}
Explanation:
One of the more expensive things you can do on modern hardware is make a trip to the heap. Anything you can do to avoid a trip to the heap is time & effort well spent. Clients of dumb_array may well want to often assign...
Process all arguments except the first one (in a bash script)
...atenate them for you; other commands might not be so nice. Don't just use one or the other: learn the difference between * and @, and when to use each. You should be using them about equally. A good example of when this will be a problem: if $3 contains a line break (\n), it will be replaced with...
MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback.
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Best practice multi language website
...d project (horrible framework, IMHO). I encountered both of the above mentioned problems before scraping that solution. Also, I suspect that it might be an attack vector.
Available options ... as I see them.
Basically you have two choices, that could be abstracted as:
http://site.tld/[:query]: wher...
Select unique or distinct values from a list in UNIX shell script
...at uniq seams to process only adjacent lines (at least by default) meaning one may sort input before feeding uniq.
– Stphane
Feb 19 '16 at 0:28
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