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Group by multiple columns in dplyr, using string vector input
...as the expression is wrapped in a call to vars().
– knowah
Aug 15 '19 at 14:13
@Khashir yes, this answer still works @...
How can one pull the (private) data of one's own Android app?
... Great when you need 1 file. Been using this for database. Facing the case now where I need multiple files.
– Dave Thomas
Oct 12 '16 at 16:26
...
How to fix “Referenced assembly does not have a strong name” error?
...sembly to my Visual Studio 2005 project (which is strongly named). I'm now getting the error:
14 Answers
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How and/or why is merging in Git better than in SVN?
... are not compared with their common ancestor.
To mitigate this Subversion now stores meta data for branch and merge. That would solve all problems right?
And oh, by the way, Subversion still sucks…
On a centralized system, like subversion, virtual directories suck. Why? Because everyone has acc...
How do I activate a virtualenv inside PyCharm's terminal?
...rrected version. This really saves a LOT of time.
Update:
Note: Pycharm now supports virtual environments directly and it seems to work well for me - so my workaround not needed anymore.
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What's the proper way to install pip, virtualenv, and distribute for Python?
...the environment.
$INITIAL_ENV/bin/pip install virtualenv-$VERSION.tar.gz
Now you can use your "bootstrap" environment to create more:
# Create a second environment from the first:
$INITIAL_ENV/bin/virtualenv py-env1
# Create more:
$INITIAL_ENV/bin/virtualenv py-env2
Go nuts!
Note
This assumes...
What is a practical use for a closure in JavaScript?
... privatefunction();
}
}
})();
As you can see there, a is now an object, with a method publicfunction ( a.publicfunction() ) which calls privatefunction, which only exists inside the closure. You can NOT call privatefunction directly (i.e. a.privatefunction() ), just publicfunction...
Can a project have multiple origins?
...rebase/push on there behalf by using there fork and are able to merge code now, not tomorrow).
– Benoit Drapeau
Oct 20 '17 at 3:04
...
How to delete a file or folder?
..._path.mkdir()
file_path = directory_path / 'file'
file_path.touch()
and now:
>>> file_path.is_file()
True
Now let's delete them. First the file:
>>> file_path.unlink() # remove file
>>> file_path.is_file()
False
>>> file_path.exists()
False
We can use...
Finding three elements in an array whose sum is closest to a given number
...A 2 , ..., A n , including negatives and positives, and another integer S. Now we need to find three different integers in the array, whose sum is closest to the given integer S. If there exists more than one solution, any of them is ok.
...