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Commands out of sync; you can't run this command now
...ed to run $stmt->store_result(); I think your response should make that more clear.
– Shadow
Mar 14 '13 at 7:24
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How can I remove specific rules from iptables?
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What is a NullReferenceException, and how do I fix it?
... or shorter if (a != null) { b = a; }.
The rest of this article goes into more detail and shows mistakes that many programmers often make which can lead to a NullReferenceException.
More Specifically
The runtime throwing a NullReferenceException always means the same thing: you are trying to use a ...
C++: what regex library should I use? [closed]
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How can I troubleshoot my Perl CGI script?
...ng the warnings pragma to all of your files:
use warnings;
If you need more information than the short warning message, use the diagnostics pragma to get more information, or look in the perldiag documentation:
use diagnostics;
Did you output a valid CGI header first?
The server is expectin...
Is there a command line utility for rendering GitHub flavored Markdown?
...f date. Flask does support 3.3, see flask.pocoo.org/docs/python3. Here's a more recent Github thread on the topic github.com/mitsuhiko/flask/issues/587. If there's another dependency that needs updated, feel free to open an issue or a pull request.
– Joe
Aug 28...
How do I clone a generic list in C#?
...n! By the way I prefer public static List<T> CLone<T>... It is more useful in the cases like this, because no further cast needed: List<MyType> cloned = listToClone.Clone();
– Plutoz
May 15 '15 at 7:02
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Throwing exceptions from constructors
...y of doing this. Read this FAQ about Handling a constructor that fails for more information. Having a init() method will also work, but everybody who creates the object of mutex has to remember that init() has to be called. I feel it goes against the RAII principle.
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When do you use the Bridge Pattern? How is it different from Adapter pattern?
...e to another. However, the intent of the Adapter pattern is to make one or more classes' interfaces look the same as that of a particular class. The Bridge pattern is designed to separate a class's interface from its implementation so you can vary or replace the implementation without changing the c...
Suggestions for debugging print stylesheets?
...he DevTools panel. (windows: Ctrl+Shift+M, mac: Cmd+Shift+M).
Click on the More overrides icon in the top right corner of the browser viewport to open the devtools drawer.
Then, select Media in the emulation drawer, and check the CSS media checkbox.
This should do the trick.
Update: The menus ...