大约有 43,200 项符合查询结果（耗时：0.0342秒） [XML]
Search and Replace with RegEx components in Atom editor
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If you Cmd-F and open the search pane, there is a ".*" button at the right side. Click it and n...
Most efficient way to reverse a numpy array
... something like this:
arr = np.array(some_sequence)
reversed_arr = arr[::-1]
do_something(arr)
look_at(reversed_arr)
do_something_else(arr)
look_at(reversed_arr)
I'm not a numpy expert, but this seems like it would be the fastest way to do things in numpy. If this is what you are already doing,...
How to catch integer(0)?
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That is R's way of printing a zero length vector (an integer one), so you could test for a bei...
increment date by one month
Let's say I have a date in the following format: 2010-12-11 (year-mon-day)
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How do I concatenate or merge arrays in Swift?
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How can I convert a dictionary into a list of tuples?
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How to migrate back from initial migration in Django 1.7?
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You can do the same with Django 1.7+ also:
python manage.py migrate <app> zero
This clears <app> from migration history and drops all tables of <app>
See django docs for more info.
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Fastest way to get the first object from a queryset in django?
...return None if the queryset returns no objects.
These were added in Django 1.6, which was released in Nov 2013.
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What does “hashable” mean in Python?
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188
From the Python glossary:
An object is hashable if it has a hash value which never changes...