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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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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...
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...
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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What are the undocumented features and limitations of the Windows FINDSTR command?
...ys relative to the provided path, or relative to the current directory if none provided.
Note - The filename prefix can be avoided when searching multiple files by using the non-standard (and poorly documented) wildcards < and >. The exact rules for how these wildcards work can be found here. ...
How do you log all events fired by an element in jQuery?
...no way to display custom events, for example if a plugin fires some custom ones?
– Daniel T.
Sep 16 '11 at 2:46
2
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In Ruby, is there an Array method that combines 'select' and 'map'?
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You can use reduce for this, which requires only one pass:
[1,1,1,2,3,4].reduce([]) { |a, n| a.push(n*3) if n==1; a }
=> [3, 3, 3]
In other words, initialize the state to be what you want (in our case, an empty list to fill: []), then always make sure to return this ...
deciding among subprocess, multiprocessing, and thread in Python?
...hreads are notoriously subtle, and, with CPython, you are often limited to one core, with them (even though, as noted in one of the comments, the Global Interpreter Lock (GIL) can be released in C code called from Python code).
I believe that most of the functions of the three modules you cite can ...
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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