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Fundamental difference between Hashing and Encryption algorithms
I see a lot of confusion between hashes and encryption algorithms and I would like to hear some more expert advice about:
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Difference between GeoJSON and TopoJSON
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If you care about file size or topology, then use TopoJSON. If you don’t care about either, then use GeoJSON for simplicity’s sake.
The primary advantage of TopoJSON is size. By eliminating redundancy and using a more efficent fixed-precision integ...
Navigation bar show/hide
...hat can fit into a few lines of code, but this is one approach that might work for you.
To hide the navigation bar:
[[self navigationController] setNavigationBarHidden:YES animated:YES];
To show it:
[[self navigationController] setNavigationBarHidden:NO animated:YES];
Documentation for this method...
How to set 'auto' for upper limit, but keep a fixed lower limit with matplotlib.pyplot
...p the lower limit of the y-axis to always be zero. I tried 'auto' and 'autorange', but those don't seem to work. Thank you in advance.
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Should I use SVN or Git? [closed]
I am starting a new distributed project. Should I use SVN or Git, and why?
21 Answers
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grep a file, but show several surrounding lines?
I would like to grep for a string, but also show the preceding five lines and the following five lines as well as the matched line. How would I be able to do this?
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Copy files from one directory into an existing directory
...2/
The dot at the end tells it to copy the contents of the current directory, not the directory itself. This method also includes hidden files and folders.
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python setup.py uninstall
...f you don't know the list of all files, you can reinstall it with the --record option, and take a look at the list this produces.
To record a list of installed files, you can use:
python setup.py install --record files.txt
Once you want to uninstall you can use xargs to do the removal:
xargs rm...
Why use Abstract Base Classes in Python?
...d to the old ways of duck typing in Python, I fail to understand the need for ABC (abstract base classes). The help is good on how to use them.
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What is the correct format to use for Date/Time in an XML file
What format do I use for Date/Time when writing to an XML file using .NET? Do I simply use DateTime.ToString() , or do I have to use a specific format?
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