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What's the difference between findAndModify and update in MongoDB?
...you will get back a different item than what you updated.
Doing it "atomically" means you are guaranteed that you are getting back the exact same item you are updating - i.e. no other operation can happen in between.
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Database cluster and load balancing
What is database clustering? If you allow the same database to be on 2 different servers how do they keep the data between synchronized. And how does this differ from load balancing from a database server perspective?
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Override compile flags for single files
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It would be preferable to use add_compile_options
add_compile_options(-Wall -Weffc++ -pedantic -std=c++0x)
or for CMake versions < 3.0 to do something more like:
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Weffc++ -pedantic -std=c++0x")
In response to further questions in the comment...
What is difference between XML Schema and DTD?
... [...]
So what are some of the other differences which might be especially important when we are converting a DTD? Let's take a look.
Typing
The most significant difference between DTDs and XML Schema is the capability to create and use datatypes in Schema in conjunction with element ...
How to remove newlines from beginning and end of a string?
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String.replaceAll("[\n\r]", "");
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java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
...ory.
Right Click on Tomcat Server > Clean
Restart the server
This usually fixes the issue you mention.
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Zoom in on a point (using scale and translate)
...-(zoomPointX * scalechange);
offsetY = -(zoomPointY * scalechange);
So really you can just pan over down and to the right when you zoom in, by a factor of how much you zoomed in, relative to the point you zoomed at.
shar...
MySQL, better to insert NULL or empty string?
...are optional while some are mandatory. In my DB I have a table which holds all these values, is it better practice to insert a NULL value or an empty string into the DB columns where the user didn't put any data?
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C# version of java's synchronized keyword?
... be thread-safe. Use YAGNI: only apply thread-safety when you know you actually are going to use it (and test it).
For the method-level stuff, there is [MethodImpl]:
[MethodImpl(MethodImplOptions.Synchronized)]
public void SomeMethod() {/* code */}
This can also be used on accessors (properties ...
How can I test https connections with Django as easily as I can non-https connections using 'runserv
...ifying middleman between your browser and the development server. Stunnel allows you to set up a lightweight server on your machine that accepts connections on a configured port, wraps them with SSL, and passes them along to some other server. We'll use this to open a stunnel port (8443) and pass ...