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Django: How to manage development and production settings?
... use a bootstrap script or a process manager to load the correct settings (by setting the environment), or just run it from your shell before starting Django: export DJANGO_SETTINGS_MODULE=myapp.production_settings.
Note that you can run this export at any time from a shell — it does not need to ...
Immutable vs Mutable types
...'bar'
print s # foobar
The value of the variable changes, but it changes by changing what the variable refers to. A mutable type can change that way, and it can also change "in place".
Here is the difference.
x = something # immutable type
print x
func(x)
print x # prints the same thing
x = som...
Java Delegates?
...
Not really, no.
You may be able to achieve the same effect by using reflection to get Method objects you can then invoke, and the other way is to create an interface with a single 'invoke' or 'execute' method, and then instantiate them to call the method your interested in (i.e. usin...
Android accelerometer accuracy (Inertial navigation)
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You get position by integrating the linear acceleration twice but the error is horrible. It is useless in practice.
Here is an explanation why (Google Tech Talk) at 23:20. I highly recommend this video.
It is not the accelerometer noise tha...
How can I get the count of milliseconds since midnight for the current?
... @MarkusMikkolainen: Nope, System.currentTimeMillis() isn't affected by time zones.
– Jon Skeet
Aug 2 '12 at 20:47
1
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Timeout expired. The timeout period elapsed prior to completion of the operation or the server is no
...e or running. When the problem occurs you can identify any blocked process by the process state. If you right-click on the process and select details it'll show you the last query executed by the process.
The second issue will cause the database to use a sub-optimal query plan. It can be resolved b...
java.net.SocketException: Connection reset
...but it is not unknown for commercial software.
More commonly, it is caused by writing to a connection that the other end has already closed normally. In other words an application protocol error.
It can also be caused by closing a socket when there is unread data in the socket receive buffer.
In Win...
Are delphi variables initialized with a value by default?
... tests to see what object variables and stack variables are initialized to by default:
10 Answers
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What are the obj and bin folders (created by Visual Studio) used for?
...ntermediate object files and other transient data files that are generated by the compiler or build system during a build. The bin directory is the directory that final output binaries (and any dependencies or other deployable files) will be written to.
You can change the actual directories used fo...
How do I edit an existing tag message in git?
...f -m "<new message>"
This will create a new tag with the same name (by overwriting the original).
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