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How does the new automatic reference counting mechanism work?
Can someone briefly explain to me how ARC works? I know it's different from Garbage Collection, but I was just wondering exactly how it worked.
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How to automatically generate a stacktrace when my program crashes
...ws the load module, offset, and function that each frame in the stack came from. Here you can see the signal handler on top of the stack, and the libc functions before main in addition to main, foo, bar, and baz.
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How to disable Django's CSRF validation?
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If you just need some views not to use CSRF, you can use @csrf_exempt:
from django.views.decorators.csrf import csrf_exempt
@csrf_exempt
def my_view(request):
return HttpResponse('Hello world')
You can find more examples and other scenarios in the Django documentation:
https://docs.djan...
How do you avoid over-populating the PATH Environment Variable in Windows?
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EDIT 4: In case you decide to use batch files to eliminate certain paths from %PATH%, you might be concerned about how to pass on arguments from your batch file to your executable such that the process is transparent (i.e., you won't notice any difference between calling the batch file and calling...
A cron job for rails: best practices?
...sts..."
EdiListener.process_new_messages
puts "done."
end
To execute from the command line, this is just "rake cron". This command can then be put on the operating system cron/task scheduler as desired.
Update this is quite an old question and answer! Some new info:
the heroku cron service ...
Docker and securing passwords
...ript as the ENTRYPOINT or CMD. The wrapper script can first import secrets from an outside location in to the container at run time, then execute the application, providing the secrets. The exact mechanics of this vary based on your run time environment. In AWS, you can use a combination of IAM role...
How to mount a host directory in a Docker container
...er, the reason you don't see anything is that you are mounting a directory from boot2docker, not from your host.
You basically need 2 successive mounts:
the first one to mount a directory from your host to your system
the second to mount the new directory from boot2docker to your contain...
I lose my data when the container exits
...hat those changes are saved and the next time when you run a new container from that Image, it will start from the point of last save or commit, preserving your data.
– Unferth
Oct 25 '13 at 11:39
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How to check if variable is string with python 2 and 3 compatibility
...'re writing 2.x-and-3.x-compatible code, you'll probably want to use six:
from six import string_types
isinstance(s, string_types)
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How do I limit the number of results returned from grep?
I would like to say 10 lines max from grep.
5 Answers
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