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What are the differences between vector and list data types in R?
... A "summary" of the list's content
Lists are used in R to represent data sets: the data.frame class is essentially a list where each element is a column of a specific type.
Another use is when representing a model: the result from lm returns a list that contains a bunch of useful objects.
d <...
Log4net does not write the log in the log file
...?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="log4net.Internal.Debug" value="true"/>
</appSettings>
</configuration>
And you see the trace in the standard output
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How is pattern matching in Scala implemented at the bytecode level?
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How does Activity.finish() work in Android?
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How do I install Python OpenCV through Conda?
...V site
Copy and paste the cv2.pyd to the Anaconda site-packages directory.
Set user environmental variables so that Anaconda knows where to find the FFMPEG utility.
Do some testing to confirm OpenCV and FFMPEG are now working.
(Read on for the detail instructions...)
Prerequisite
Install Anacond...
How to completely uninstall Visual Studio 2010?
I've been looking to find a CLEAN solution to completely and ultimately remove Visual Studio 2010 from my computer. When you install Visual Studio, it also installs a bunch of programs (about 55) in the add/remove programs panel ( appwiz.cpl ).
...
What's the Linq to SQL equivalent to TOP or LIMIT/OFFSET?
...ethod. 2) the take works in client, not in db, so if you have large result set you would end up getting all of it to the client from the db!
– Yuki
Mar 13 '11 at 4:50
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How can I dynamically create a selector at runtime with Objective-C?
...tor at runtime. This can be done with the NSSelectorFromString function:
setWidthHeight = NSSelectorFromString(aBuffer);
Edit: Bummer, too slow. :P
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What does a b prefix before a python string mean?
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Difference between timestamps with/without time zone in PostgreSQL
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The behaviour differs depending on at least three factors:
The timezone setting in the client.
The data type (i.e. WITH TIME ZONE or WITHOUT TIME ZONE) of the value.
Whether the value is specified with a particular time zone.
Here are examples covering the combinations of those factors:
foo=&g...