大约有 41,370 项符合查询结果（耗时：0.0302秒） [XML]
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
...
Python: print a generator expression?
...
163
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...
Python Create unix timestamp five minutes in the future
...
350
Another way is to use calendar.timegm:
future = datetime.datetime.utcnow() + datetime.timedel...
Specifying Maven's local repository location as a CLI parameter
...
3 Answers
3
Active
...
git: difference between “branchname” and “refs/heads/branchname”
...
3 Answers
3
Active
...
What is the list of possible values for navigator.platform as of today? [closed]
...
3 Answers
3
Active
...
Cast Object to Generic Type for returning
...
3 Answers
3
Active
...
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...
How do I represent a hextile/hex grid in memory?
...
answered Jun 1 '13 at 15:59
a paid nerda paid nerd
27.6k2929 gold badges116116 silver badges166166 bronze badges
...