大约有 44,000 项符合查询结果（耗时：0.0539秒） [XML]
Python: fastest way to create a list of n lists
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105
The probably only way which is marginally faster than
d = [[] for x in xrange(n)]
is
from...
How do I get a list of all the duplicate items using pandas in python?
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10 Answers
10
Active
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Extract a number from a string (JavaScript)
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21 Answers
21
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How to select lines between two marker patterns which may occur multiple times with awk/sed
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191
Use awk with a flag to trigger the print when necessary:
$ awk '/abc/{flag=1;next}/mno/{flag=...
How to remove last n characters from every element in the R vector
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117
Here is an example of what I would do. I hope it's what you're looking for.
char_array = c("...
How to change plot background color?
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You created a figure and axis/es together
fig, ax = plt.subplots(nrows=1, ncols=1)
You created a figure, then axis/es later
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1) # nrows, ncols, index
You used the stateful API (if you're doing anything more than a few lines, and especially if you h...
class method generates “TypeError: … got multiple values for keyword argument …”
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165
The problem is that the first argument passed to class methods in python is always a copy of t...
How to increment a NSNumber
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124
Update: FYI, I personally like BoltClock's and DarkDusts's one-line answers better. They're mo...
How do I parse a URL query parameters, in Javascript? [duplicate]
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129
Today (2.5 years after this answer) you can safely use Array.forEach. As @ricosrealm suggests,...
Using Python String Formatting with Lists
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print s % tuple(x)
instead of
print s % (x)
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