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How to select the first element with a specific attribute using XPath
The XPath bookstore/book[1] selects the first book node under bookstore .
9 Answers
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How to check if a float value is a whole number
...ng to find the largest cube root that is a whole number, that is less than 12,000.
13 Answers
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How to test if list element exists?
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156
This is actually a bit trickier than you'd think. Since a list can actually (with some effort)...
Why is XOR the default way to combine hashes?
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119
Assuming uniformly random (1-bit) inputs, the AND function output probability distribution is ...
How to sort two lists (which reference each other) in the exact same way
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13 Answers
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Convert Rows to columns using 'Pivot' in SQL Server
...nt] int
);
INSERT INTO #yt
(
[Store],
[Week], [xCount]
)
VALUES
(102, 1, 96),
(101, 1, 138),
(105, 1, 37),
(109, 1, 59),
(101, 2, 282),
(102, 2, 212),
(105, 2, 78),
(109, 2, 97),
(105, 3, 60),
(102, 3, 123),
(101, 3, 220),
(109, 3, 87);
If your...
Is there a ceiling equivalent of // operator in Python?
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edited Sep 14 at 21:47
Machavity♦
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Non greedy (reluctant) regex matching in sed?
...egex for this context is pretty easy to get:
perl -pe 's|(http://.*?/).*|\1|'
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Pandas get topmost n records within each group
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195
Did you try df.groupby('id').head(2)
Ouput generated:
>>> df.groupby('id').head(2)...