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Python: Select subset from list based on index set

...irst option is equivalent to itertools.compress available since Python 2.7/3.1. See @Gary Kerr's answer. property_asel = list(itertools.compress(property_a, good_objects)) share | improve this ans...
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Pandas aggregate count distinct

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How to get record created today by rails activerecord?

... | edited Apr 3 '18 at 21:17 answered May 27 '10 at 9:02 ...
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CPU Privilege Rings: Why rings 1 and 2 aren't used?

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How does RegexOptions.Compiled work?

... 304 RegexOptions.Compiled instructs the regular expression engine to compile the regular expressio...
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Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)

... I would suggest using the duplicated method on the Pandas Index itself: df3 = df3[~df3.index.duplicated(keep='first')] While all the other methods work, the currently accepted answer is by far the least performant for the provided example. Furthermore, while the groupby method is only slightly les...
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MySQL, update multiple tables with one query

... underscore_d 4,90633 gold badges2828 silver badges5454 bronze badges answered Feb 23 '12 at 16:41 IrfanIrfan ...
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Intellij IDEA Java classes not auto compiling on save

... 253 UPDATED For IntelliJ IDEA 12+ releases we can build automatically the edited sources if we are ...
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How can you use an object's property in a double-quoted string?

...-quoted string, you have to enclose that subexpression in $(): $foo = 1,2,3 "$foo[1]" # yields "1 2 3[1]" "$($foo[1])" # yields "2" $bar = "abc" "$bar.Length" # yields "abc.Length" "$($bar.Length)" # yields "3" PowerShell only expands variables in those cases, nothing more. To force eval...
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How to fix the uninitialized constant Rake::DSL problem on Heroku?

... answered Jun 7 '11 at 9:31 KaleKale 2,07411 gold badge1111 silver badges22 bronze badges ...