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Standard deviation of a list
...ndard deviation of iterables like yours:
>>> A_rank = [0.8, 0.4, 1.2, 3.7, 2.6, 5.8]
>>> import statistics
>>> statistics.stdev(A_rank)
2.0634114147853952
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improv...
Convert Year/Month/Day to Day of Year in Python
...d_end.year, 1, 1).toordinal() + 1
825 1508 1852 1.2 6.8 yday = (period_end - date(period_end.year, 1, 1)).days + 1
826 1508 5078 3.4 18.6 yday = period_end.timetuple().tm_yday
(...)
So most efficient is
yday...
How to find out which package version is loaded in R?
... methods base
other attached packages:
[1] ggplot2_0.9.0 reshape2_1.2.1 plyr_1.7.1
loaded via a namespace (and not attached):
[1] colorspace_1.1-1 dichromat_1.2-4 digest_0.5.2 MASS_7.3-18 memoise_0.1 munsell_0.3
[7] proto_0.3-9.2 RColorBrewer_1.0-...
Good PHP ORM Library?
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Look into Doctrine.
Doctrine 1.2 implements Active Record. Doctrine 2+ is a DataMapper ORM.
Also, check out Xyster. It's based on the Data Mapper pattern.
Also, take a look at DataMapper vs. Active Record.
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Swift: Convert enum value to String?
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In Swift 1.2 you can use: println(Audience.Friends.rawValue)
– Oleg Popov
Aug 13 '15 at 4:19
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Where to place the 'assets' folder in Android Studio?
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Problem: on newer versions of Android Studio (I'm using 2.1.2), empty asset folders are not displayed in the Project Files window, making it difficult to add files. :(
– SMBiggs
Jun 27 '16 at 15:40
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Best way to give a variable a default value (simulate Perl ||, ||= )
...me to yet another great feature of 5.3 I'm missing out on in my RHEL5/PHP5.1.2 servers.
– Michael Berkowski
May 12 '11 at 2:10
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Javascript Shorthand for getElementById
...nchmark it's about three times as slow as a regular function. 0.4µs * 3 = 1.2µs
– Robert
Jun 20 '11 at 15:58
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How can we print line numbers to the log in java
...number as part of its output pattern. See http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/PatternLayout.html for details on how to do this (the key element in the conversion pattern is "L"). However, the Javadoc does include the following:
WARNING Generating caller location
info...
How to filter logcat in Android Studio?
...ny logcat output when using the | to separate the two tags (Android Studio 1.2)
– Someone Somewhere
May 12 '15 at 18:52
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