大约有 38,000 项符合查询结果（耗时：0.0393秒） [XML]
Explicitly select items from a list or tuple
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list( myBigList[i] for i in [87, 342, 217, 998, 500] )
I compared the answers with python 2.5.2:
19.7 usec: [ myBigList[i] for i in [87, 342, 217, 998, 500] ]
20.6 usec: map(myBigList.__getitem__, (87, 342, 217, 998, 500))
22.7 usec: itemgetter(87, 342, 217, 998...
JQuery: detect change in input field [duplicate]
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answered Oct 9 '12 at 10:21
TimmTimm
11.2k44 gold badges2727 silver badges4141 bronze badges
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How to make rounded percentages add up to 100%
... (i >= (l.length + off)) }).
value();
}
foo([13.626332, 47.989636, 9.596008, 28.788024], 100) // => [48, 29, 14, 9]
foo([16.666, 16.666, 16.666, 16.666, 16.666, 16.666], 100) // => [17, 17, 17, 17, 16, 16]
foo([33.333, 33.333, 33.333], 100) // => [34, 33, 33]
foo([33.3, 33.3...
Multiple aggregations of the same column using pandas GroupBy.agg()
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mean sum
dummy
1 0.036901 0.369012
or as a dictionary:
In [21]: df.groupby('dummy').agg({'returns':
{'Mean': np.mean, 'Sum': np.sum}})
Out[21]:
returns
Mean Sum
dummy ...
How to convert a string or integer to binary in Ruby?
How do you create integers 0..9 and math operators + - * / in to binary strings.
For example:
6 Answers
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How to remove specific elements in a numpy array
...cific question:
import numpy as np
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])
index = [2, 3, 6]
new_a = np.delete(a, index)
print(new_a) #Prints `[1, 2, 5, 6, 8, 9]`
Note that numpy.delete() returns a new array since array scalars are immutable, similar to strings in Python, so each time a chan...
Remove all special characters except space from a string using JavaScript
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@tech_geek you can do str.replace(/[^a-zA-Z0-9]/g, "")
– Chidi Williams
Jan 5 '19 at 20:26
3
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Multi-line commands in GHCi
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edited Dec 9 '11 at 9:34
answered Dec 9 '11 at 8:52
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Removing colors from output
... to catch that extra control sequence.
./somescript | sed -r "s/\x1B\[([0-9]{1,3}(;[0-9]{1,2})?)?[mGK]//g"
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How do I analyze a .hprof file?
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answered Oct 9 '08 at 4:41
CowanCowan
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