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Syntax behind sorted(key=lambda: …)
...aurang Tandon
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answered Jan 23 '12 at 2:26
EvanEvan
5,59111 gold badge2121 ...
Unique (non-repeating) random numbers in O(1)?
...s off at 10:
+--+--+--+--+--+--+--+--+--+--+--+
| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|10|
+--+--+--+--+--+--+--+--+--+--+--+
^
max
At each iteration, a random number r is selected between 0 and max, array[r] and array[max] are swapped, t...
Maven is not working in Java 8 when Javadoc tags are incomplete
...e code) then you can disable this check.
DocLint is a new feature in Java 8, which is summarized as:
Provide a means to detect errors in Javadoc comments early in the
development cycle and in a way that is easily linked back to the
source code.
This is enabled by default, and will run a w...
How to find the installed pandas version
... [76]: import pandas as pd
In [77]: pd.__version__
Out[77]: '0.12.0-933-g281dc4e'
Pandas also provides a utility function, pd.show_versions(), which reports the version of its dependencies as well:
In [53]: pd.show_versions(as_json=False)
INSTALLED VERSIONS
------------------
commit: None
pytho...
How can I initialize a String array with length 0 in Java?
...
answered Nov 3 '09 at 8:09
Jon SkeetJon Skeet
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...
Java 8 Stream and operation on arrays
I have just discovered the new Java 8 stream capabilities. Coming from Python, I was wondering if there was now a neat way to do operations on arrays like summing, multiplying two arrays in a "one line pythonic" way ?
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How to use `string.startsWith()` method ignoring the case?
...
8 Answers
8
Active
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Converting a column within pandas dataframe from int to string
...t('AB'))
In [17]: df
Out[17]:
A B
0 0 1
1 2 3
2 4 5
3 6 7
4 8 9
In [18]: df.dtypes
Out[18]:
A int64
B int64
dtype: object
Convert a series
In [19]: df['A'].apply(str)
Out[19]:
0 0
1 2
2 4
3 6
4 8
Name: A, dtype: object
In [20]: df['A'].apply(str)[0]
Out[...
Base64 length calculation?
... of 4, so 1, 2 or 3 input bytes => 4 chars; 4, 5 or 6 input bytes => 8 chars; 7, 8 or 9 input bytes => 12 chars.
– Paul R
Nov 14 '12 at 13:17
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Why in Java 8 split sometimes removes empty strings at start of result array?
Before Java 8 when we split on empty string like
3 Answers
3
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