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Send message to specific client with socket.io and node.js
I'm working with socket.io and node.js and until now it seems pretty good, but I don't know how to send a message from the server to an specific client, something like this:
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Difference between static memory allocation and dynamic memory allocation
I would like to know what is the difference between static memory allocation and dynamic memory allocation?
7 Answers
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Why do we need RESTful Web Services?
...tes that did not exist when the
browser was released? How can the
client know about these sites?
These may sound like inane questions, but if you know the answer, then you can start to see what REST is all about.
Look at StackOverflow for more benefits of REST. When I am looking at a question, I...
Querying DynamoDB by date
...ps on the range key only. The hash key is required such that the service knows which partition to look in to find the data.
You can of course perform a scan operation to filter by the date value, however this would require a full table scan, so it is not ideal.
If you need to perform an indexed l...
CSS Div stretch 100% page height
...of the HTML box. You can also use height:100% on the cloud-container as it now refers to the height of the HTML tag and not the viewport.
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Android emulator freezing OS X v10.9 (Mavericks) with HAXM
I just updated to OS X v10.9 (Mavericks), and now whenever I start up any of my emulators, as soon as the emulator starts up, my entire computer freezes with a spinning progress indicator in the center of the screen (not a beachball, the progress indicator is similar to what you see when shutting...
How do JavaScript closures work?
How would you explain JavaScript closures to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves?
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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...as df.drop(df[df.score < 50].index, inplace=True). Nevertheless didn't know the "index" trick. Helped me a lot
– Quickbeam2k1
Jun 8 '16 at 10:59
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Creating a ZIP Archive in Memory Using System.IO.Compression
... zipping without writing any file.
string fileName = "export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".xlsx";
byte[] fileBytes = here is your file in bytes
byte[] compressedBytes;
string fileNameZip = "Export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".zip";
using (var outStream = new Me...
Changing variable names in Vim
...the variable usage. Press gd. Which means - move cursor to the definition.
Now Press [{ - this will bring you to the scope begin.
Press V - will turn on Visual Line selection.
Press % - will jump to the opposite } thus will select the whole scope.
Press :s/ - start of the substitute command.
<C-R...