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Plot correlation matrix into a graph
...lot it using one of the various tutorials out there.
Using base graphics:
http://flowingdata.com/2010/01/21/how-to-make-a-heatmap-a-quick-and-easy-solution/
Using ggplot2:
http://learnr.wordpress.com/2010/01/26/ggplot2-quick-heatmap-plotting/
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Displaying better error message than “No JSON object could be decoded”
...
You could try the rson library found here: http://code.google.com/p/rson/ . I it also up on PYPI: https://pypi.python.org/pypi/rson/0.9 so you can use easy_install or pip to get it.
for the example given by tom:
>>> rson.loads('[1,2,]')
...
rson.base.tokeni...
Why does volatile exist?
What does the volatile keyword do? In C++ what problem does it solve?
18 Answers
18
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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...compression issue first. There are some relevant tests already available:
http://www.theeggeadventure.com/wikimedia/index.php/Java_Data_Compression
"I ran a test to compress one million consecutive integers using
various forms of compression. The results are as follows:"
None 4000027
De...
In JavaScript, why is “0” equal to false, but when tested by 'if' it is not false by itself?
...e issue:
and ==
Moral of the story use ===
table generation credit: https://github.com/dorey/JavaScript-Equality-Table
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DateTime “null” value
...t like:
DateTime dt2 = dt ?? DateTime.MinValue;
You can read more here:
http://msdn.microsoft.com/en-us/library/b3h38hb0.aspx
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Why is string concatenation faster than array join?
Today, I read this thread about the speed of string concatenation.
9 Answers
9
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How to debug a single thread in Visual Studio?
I have a solution with some projects. There are several break-points in different projects. I want to trace the first thread hit one of these break-points and continue tracing that single thread despite of other threads entering the same code-blocks.
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How to stretch div height to fill parent div - CSS
...t;/body>
With normal CSS, you can do the following. See a working app https://github.com/onmyway133/Lyrics/blob/master/index.html
#root {
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 100%;
}
With flexbox, you can
html, body {
height: 100%
}
body {
display: flex;
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Why does Enumerable.All return true for an empty sequence? [duplicate]
The code creates an empty collection of string, then tries to determine if all the elements in the collection are "ABC".
If you run it, b will be true.
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