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How to check status of PostgreSQL server Mac OS X
...ok for a command that looks something like this (your version may not be 8.3):
/Library/PostgreSQL/8.3/bin/postgres -D /Library/PostgreSQL/8.3/data
To start the server, execute something like this:
/Library/PostgreSQL/8.3/bin/pg_ctl start -D /Library/PostgreSQL/8.3/data -l postgres.log
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OSError: [Errno 2] No such file or directory while using python subprocess in Django
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How to initialize const member variable in a class?
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edited Jun 12 '17 at 16:30
Rakete1111
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an...
How to tell which version of a gem a rails app is using
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In Rails 3 and Rails 4, use bundle show
In Rails 2, rake gems will print out what gems, depende...
Python: print a generator expression?
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Quick answer:
Doing list() around a generator expression is (almost) exactly equivalent to havi...
What does numpy.random.seed(0) do?
..., 0.65, 0.44, 0.89])
>>> numpy.random.rand(4)
array([ 0.96, 0.38, 0.79, 0.53])
(pseudo-)random numbers work by starting with a number (the seed), multiplying it by a large number, adding an offset, then taking modulo of that sum. The resulting number is then used as the seed to gen...
What is the list of possible values for navigator.platform as of today? [closed]
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Specifying Maven's local repository location as a CLI parameter
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git: difference between “branchname” and “refs/heads/branchname”
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Adding an arbitrary line to a matplotlib plot in ipython notebook
...matplotlib.pyplot as plt
np.random.seed(5)
x = np.arange(1, 101)
y = 20 + 3 * x + np.random.normal(0, 60, 100)
plt.plot(x, y, "o")
# draw vertical line from (70,100) to (70, 250)
plt.plot([70, 70], [100, 250], 'k-', lw=2)
# draw diagonal line from (70, 90) to (90, 200)
plt.plot([70, 90], [90, 20...