大约有 45,000 项符合查询结果（耗时：0.0532秒） [XML]
vagrant up failed, /dev/vboxnetctl: no such file or directory
...
I'm running macOS High Sierra 10.13.1 and VirtualBox 5.2.2.
This worked for me:
Grant permission to VirtualBox under System Preferences > Security & Privacy > General (this request is new to macOS High Sierra)
Open Terminal and run: sudo "/Library/Application Support/V...
calculating the difference in months between two dates
...
26 Answers
26
Active
...
How to compare two dates?
...t; datetime(3000, 1, 1) < present
False
>>> present - datetime(2000, 4, 4)
datetime.timedelta(4242, 75703, 762105)
share
|
improve this answer
|
follow
...
What is the difference between gmake and make?
...
|
edited Jul 28 '09 at 19:21
dmckee --- ex-moderator kitten
87.6k2323 gold badges127127 silver badges219219 bronze badges
...
Can't create handler inside thread that has not called Looper.prepare()
...
27 Answers
27
Active
...
How to tell whether a point is to the right or left side of a line
I have a set of points. I want to separate them into 2 distinct sets. To do this, I choose two points ( a and b ) and draw an imaginary line between them. Now I want to have all points that are left from this line in one set and those that are right from this line in the other set.
...
String concatenation vs. string substitution in Python
...meit.Timer('so_q_sub(1000)','from __main__ import so_q_sub')
>>> t2 = timeit.Timer('so_q_cat(1000)','from __main__ import so_q_cat')
>>> t1.timeit(number=10000000)
12.166618871951641
>>> t2.timeit(number=10000000)
5.7813972166853773
>>> t1.timeit(number=1)
1.10349...
Fast check for NaN in NumPy
...
162
Ray's solution is good. However, on my machine it is about 2.5x faster to use numpy.sum in place...