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Why does Google +1 record my mouse movements? [closed]
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It appears to be seeding a random number generator with your mouse movements.
The mouse move handler itself does something along the lines of the following:
var b = ((event.X << 16) + event.Y) * (new Date().getTime() % 1000000);
c = c * b % d;
if (previousMouseMove...
Reverse Y-Axis in PyPlot
I have a scatter plot graph with a bunch of random x, y coordinates. Currently the Y-Axis starts at 0 and goes up to the max value. I would like the Y-Axis to start at the max value and go up to 0.
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Why is it not possible to extend annotations in Java?
... answer in the JSR 175 Design FAQ, where it says:
Why don’t you support annotation subtyping (where one annotation type extends another)?
It complicates the annotation type
system, and makes it much more
difficult to write “Specific Tools”.
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“Specific Tools” — ...
How to go back to lines edited before the last one in Vim?
... goes to last edited line. Is there a way to go further in the editing history? I often accidentally insert something while browsing the file, undo, but then `. will not bring me where I want anymore.
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Understanding FFT output
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You should neither look for the real or imaginative part of a complex number (that what's your real and imaginary array is). Instead you want to look for the magnitude of the frequency which is defined as sqrt (real * real + imag * imag). This number...
How do you create nested dict in Python?
...tions package to facilitate creating nested dictionaries.
>>> import collections
>>> d = collections.defaultdict(dict)
>>> d['dict1']['innerkey'] = 'value'
>>> d # currently a defaultdict type
defaultdict(<type 'dict'>, {'dict1': {'innerkey': 'value'}})
&g...
Generic List - moving an item within the list
...in it's own Move method.
UPDATE 2015-12-30: You can see the source code for the Move and MoveItem methods in corefx now for yourself without using Reflector/ILSpy since .NET is open source.
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How to get all enum values in Java?
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YourEnumClass[] yourEnums = YourEnumClass.class.getEnumConstants();
Or
YourEnumClass[] yourEnums = YourEnumClass.values();
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Transpose a data frame
...t;- as.data.frame(t(df.aree[,-1]))
colnames(df.aree) <- n
df.aree$myfactor <- factor(row.names(df.aree))
str(df.aree) # Check the column types
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Are static methods inherited in Java?
...ds that are accessible are inherited by subclasses.
From the Sun Java Tutorials:
A subclass inherits all of the public and protected members of its parent, no matter what package the subclass is in. If the subclass is in the same package as its parent, it also inherits the package-private memb...