大约有 47,000 项符合查询结果（耗时：0.0380秒） [XML]
Flatten nested dictionaries, compressing keys
...iterating the dict by key/value, creating new keys for your new dictionary and creating the dictionary at final step.
import collections
def flatten(d, parent_key='', sep='_'):
items = []
for k, v in d.items():
new_key = parent_key + sep + k if parent_key else k
if isinstan...
How to sort the files according to the time stamp in unix? [closed]
...rt the files according to the time stamp in unix?
I need to sort the files and also based on time they created.
2 Answers
...
Installation Issue with matplotlib Python [duplicate]
...s-a-backend to render using the API of Cocoa by default). There are Qt4Agg and GTKAgg and as a back-end is not the default. Set the back end of macosx that is differ compare with other windows or linux os.
Solution
I assume you have installed the pip matplotlib, there is a directory in your root...
Find the most frequent number in a numpy vector
...s:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.bincount.html
and then probably use np.argmax:
a = np.array([1,2,3,1,2,1,1,1,3,2,2,1])
counts = np.bincount(a)
print(np.argmax(counts))
For a more complicated list (that perhaps contains negative numbers or non-integer values), you can us...
How to stop and restart memcached server?
How to stop and restart memcached server 1.4.5 in linux OS from command line?
12 Answers
...
What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...h faster since it doesn't have to deal with all those extra method calls.
And as Atrey points out, c.contains(..) increases the time complexity of removeAll to O(n2) as opposed to clear's O(n).
share
|
...
Is it OK to leave a channel open?
...
It's OK to leave a Go channel open forever and never close it. When the channel is no longer used, it will be garbage collected.
Note that it is only necessary to close a channel if the receiver is
looking for a close. Closing the channel is a control signal on...
Elegant way to check for missing packages and install them?
...de with coauthors these days. Many of them are novice/intermediate R users and don't realize that they have to install packages they don't already have.
...
What's the meaning of Base SDK, iOS deployment target, Target, and Project in xcode
...
The base SDK is what you build your app against (i.e. include and library files and frameworks). As you say, it doesn't affect the deployment target, except that base sdk >= deployment target.
You specify build settings on 2 levels as each project can have multiple targets and you ...
Android Left to Right slide animation
...e launch modes are single instance.
Using onfling() , I swing them left and right.
9 Answers
...