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Send message to specific client with socket.io and node.js
... disconnect listener.
I would use the latter one, since depending on your application you might want to have more state on the clients anyway, so something like clients[id] = {conn: clientConnect, data: {...}} might do the job.
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Exposing database IDs - security risk?
...fiers. On the other hand, it would be extremely burdensome to design a web application without exposing them at all. Thus, it's important to understand the risks and take care to address them.
The first danger is what OWASP called "insecure direct object references." If someone discovers the id of a...
ImportError: Cannot import name X
...ally produces a tree of one-way dependencies and this is normally the best approach. But there are exceptions to this. C++ classes certainly can refer to one another circularly. (Although it is impossible for them to be composed of one another.) Without forward-declaration, this is a problem in Pyth...
“/usr/bin/ld: cannot find -lz”
...d build includes many host executables used by the SDK to build an android app.
In my case the make stopped while building zipalign, which is used to optimize an apk before installing on an android device.
Installing lib32z1-dev solved my problem, under Ubuntu you can install it with the following ...
pythonw.exe or python.exe?
...e window. To prevent this I have to double-click the file name to open the app. Only then do I see just the GUI and no console.
– Luther
Jul 28 at 6:54
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Using Predicate in Swift
I'm working through the tutorial here (learning Swift) for my first app:
http://www.appcoda.com/search-bar-tutorial-ios7/
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ASP.NET: HTTP Error 500.19 – Internal Server Error 0x8007000d
I am replicating web application deployment and found several issues related to HTTP Error 500.19 . My machine is running Windows 7 while the working development is using Windows 8 . We're developing our Web Application using Visual Studio 2010 .
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Remove ':hover' CSS behavior from element
...e the :not pseudo-class to exclude the classes you don't want the hover to apply to:
FIDDLE
<div class="test"> blah </div>
<div class="test"> blah </div>
<div class="test nohover"> blah </div>
.test:not(.nohover):hover {
border: 1px solid red;
}
This d...
Purpose of “consider_all_requests_local” in config/environments/development.rb?
...des line numbers and a backtrace. consider_all_requests_local allows your app to display these developer-friendly messages even when the machine making the request is remote.
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PostgreSQL DISTINCT ON with different ORDER BY
...et is unpredictable unless ORDER BY is used to ensure that the desired row appears first. [...] The DISTINCT ON expression(s) must match the leftmost ORDER BY expression(s).
Official documentation
So you'll have to add the address_id to the order by.
Alternatively, if you're looking for the full...