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“Large data” work flows using pandas
... one contains different fields, or do they have some records per file with all of the fields in each file?
Do you ever select subsets of rows (records) based on criteria (e.g. select the rows with field A > 5)? and then do something, or do you just select fields A, B, C with all of the records (a...
Are global variables in PHP considered bad practice? If so, why?
...panded type declarations, where you can also use scalar types (like int or string).
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Timer function to provide time in nano seconds using C++
...psets, so you may want to make sure you do not have those chipset. Additionally some dual core AMDs may also cause a problem. See the second post by sebbbi, where he states:
QueryPerformanceCounter() and
QueryPerformanceFrequency() offer a
bit better resolution, but have
different issues. ...
How to check for the type of a template parameter?
...ioned the main logic can be done in a different function, which accepts an extra flag to indicate the type, and this specialized declaration can just set the flag accordingly and directly pass on all the other arguments without touching anything. So if 10 different classes need to be handled, it is ...
Read first N lines of a file in python
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The with statement works on Python 2.6, and requires an extra import statement on 2.5. For 2.4 or earlier, you'd need to rewrite the code with a try...except block. Stylistically, I prefer the first option, although as mentioned the second is more robust for short files.
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Why is Python 3.x's super() magic?
In Python 3.x, super() can be called without arguments:
1 Answer
1
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belongs_to through associations
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# ------- Helpers -------
def question
answer.question
end
# extra sugar
def question_id
answer.question_id
end
end
This approach is pretty simple, but comes with tradeoffs. It requires Rails to load answer from the db, and then question. This can be optimized later by eage...
What is the command to list the available avdnames
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List all your emulators: emulator -list-avds Run one of the listed emulators: emulator @name-of-your-emulator where emulator is under: ${ANDROID_SDK}/tools/emulator
– Dhiraj Himani
Jun 16 ...
Why can't I use Docker CMD multiple times to run multiple services?
...our Dockerfile a little bit cleaner, you could put your CMD commands to an extra file:
FROM centos+ssh
EXPOSE 22
EXPOSE 4149
CMD sh /home/centos/all_your_commands.sh
And a file like this:
service sshd start &
/opt/mq/sbin/rabbitmq-server start
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Installing Python packages from local file system folder to virtualenv with pip
Is it possible to install packages using pip from the local filesystem?
10 Answers
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