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Standard deviation of a list
... function _sum rather than the built-in sum which I've used in its place.
Now we have for example:
>>> mean([1, 2, 3])
2.0
>>> stddev([1, 2, 3]) # population standard deviation
0.816496580927726
>>> stddev([1, 2, 3], ddof=1) # sample standard deviation
0.1
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How can I convert a stack trace to a string?
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Fyi, the package has changed and the class is now at: org.apache.commons.lang3.exception.ExceptionUtils.
– schmmd
Nov 13 '13 at 23:18
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Autoreload of modules in IPython [duplicate]
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I'm using 0.12.1, and haven't yet tried 0.13, so I don't know whether it will work with 0.13+
– kara deniz
Jan 2 '13 at 18:12
6
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What is a covariant return type?
...n explicit reference to a MyFoo object will be able to invoke clone() and know (without casting) that the return value is an instance of MyFoo. Without covariant return types, the overridden method in MyFoo would have to be declared to return Object - and so calling code would have to explicitly do...
DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
...hub.com/Homebrew/brew/blob/master/docs/Homebrew-and-Python.md calls out a known issue with pip and a work around.
Worked for me.
You can make this "empty prefix" the default by adding a
~/.pydistutils.cfg file with the following contents:
[install]
prefix=
Edit: Do not use this Homebrew r...
How to test if string exists in file with Bash?
...(There was an error in my examples; it still used some regex syntax. Fixed now.)
– Thomas
Jan 24 '11 at 17:04
4
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iPhone get SSID without private library
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does anyone know what BSSID is? it looks like MAC address of a router, but it's actually not. neither it is device's MAC address.
– peetonn
Oct 30 '13 at 5:58
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What is the fastest factorial function in JavaScript? [closed]
...4 = Math.exp(-(z + 5.5));
d = d1 * d2 * d3 * d4;
return d;
}
You can now do cool stuff like factorial(0.41), etc however accuracy might be a little off, after all, it is an approximation of the result.
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Bytecode features not available in the Java language
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As far as I know there are no major features in the bytecodes supported by Java 6 that are not also accessible from Java source code. The main reason for this is obviously that the Java bytecode was designed with the Java language in mind...
Why cast unused return values to void?
...s the motivation for this, to explicitly show other "developers" that you know this function returns but you're explicitly ignoring it.
This is a way to ensure that where necessary error codes are always handled.
I think for C++ this is probably the only place that I prefer to use C-style casts to...