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CRON job to run on the last day of the month
...sibly the easiest way is to simply do three separate jobs:
55 23 30 4,6,9,11 * myjob.sh
55 23 31 1,3,5,7,8,10,12 * myjob.sh
55 23 28 2 * myjob.sh
That will run on the 28th of February though, even on leap years so, if that's a problem, you'll need to find another way.
Howe...
Comparing two dataframes and getting the differences
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>>> df.reindex(idx)
Date Fruit Num Color
9 2013-11-25 Orange 8.6 Orange
8 2013-11-25 Apple 22.1 Red
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Why should I use var instead of a type? [duplicate]
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110
It's really just a coding style. The compiler generates the exact same for both variants.
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Switch statement for greater-than/less-than
...where performed on Windows 7 32bit with the folowing versions: Chrome 21.0.1180.89m, Firefox 15.0, Opera 12.02, MSIE 9.0.8112, Safari 5.1.7. Node was run on a Linux 64bit box because the timer resolution on Node.js for Windows was 10ms instead of 1ms.
if-immediate
This is the fastest in all tested...
How do SQL EXISTS statements work?
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edited May 1 '11 at 6:59
answered May 1 '11 at 6:54
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How to round the minute of a datetime object
... OmnifariousOmnifarious
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Moving decimal places over in a double
...);
System.out.println(new BigDecimal(x));
prints:
0.100000000000000005551115123125782702118158340454101562
12.339999999999999857891452847979962825775146484375
In short, rounding is unavoidable for sensible answers in floating point whether you are doing this explicitly or not.
Note: x / 100 ...
String.format() to format double in java
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answered Feb 3 '11 at 11:04
David TangDavid Tang
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SQL statement to select all rows from previous day
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