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How to get the last N rows of a pandas DataFrame?
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answered Feb 7 '13 at 21:03
Wes McKinneyWes McKinney
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How do we control web page caching, across all browsers?
... you don't care about IE6 nor HTTP 1.0 clients (HTTP 1.1 was introduced 1997), then you could omit Pragma.
Cache-Control: no-store, must-revalidate
Expires: 0
If you don't care about HTTP 1.0 proxies either, then you could omit Expires.
Cache-Control: no-store, must-revalidate
On the other han...
Print All JVM Flags
...nd find suitable option faster:
https://chriswhocodes.com/ (OracleJDK 6/7/8/9/10/11/12, OpenJDK 8/9/10/11, Graal CE/EE, OpenJ9, Zing)
http://jvm-options.tech.xebia.fr/
http://www.pingtimeout.fr/2012/05/jvm-options-complete-reference.html
http://stas-blogspot.blogspot.com/2011/07/most-complete-...
How to round up to the nearest 10 (or 100 or X)?
...orestecologist
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answered Jun 24 '11 at 5:51
TommyTommy
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Convert list of dictionaries to a pandas DataFrame
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C#: how to get first char of a string?
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answered Oct 7 '10 at 5:01
Matthew FlaschenMatthew Flaschen
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Avoiding memory leaks with Scalaz 7 zipWithIndex/group enumeratees
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Aaron NovstrupAaron Novstrup
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add a co...
Sort a list from another list IDs
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answered Mar 7 '13 at 15:42
Denys DenysenkoDenys Denysenko
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Assign multiple columns using := in data.table, by group
...ol1 col2 mean sum
# 1: 1 1 hi hello 2.5 5
# 2: 2 2 hi hello 3.5 7
# 3: 3 3 hi hello 4.5 9
# 4: 1 4 hi hello 2.5 5
# 5: 2 5 hi hello 3.5 7
# 6: 3 6 hi hello 4.5 9
mynames = c("Name1", "Longer%")
x[ , (mynames) := list(mean(b) * 4, sum(b) * 3), by = a]
# a b col1 ...
Difference between “!==” and “==!” [closed]
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edited Sep 7 '12 at 14:28
BoltClock♦
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