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Obtaining a powerset of a set in Java
The powerset of {1, 2, 3} is:
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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher
...und this article. For Maven3, changing my environment variable name from M2_HOME to M3_HOME did the trick. I am on a Mac running OSX 10.9 with JDK 1.7. Hope this helps.
Note: Please delete M2_HOME, if already set. Eg: unset M2_HOME
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Best way to represent a fraction in Java?
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What's the most efficient way to test two integer ranges for overlap?
Given two inclusive integer ranges [x1:x2] and [y1:y2], where x1 ≤ x2 and y1 ≤ y2, what is the most efficient way to test whether there is any overlap of the two ranges?
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MySql: Tinyint (2) vs tinyint(1) - what is the difference?
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It means display width
Whether you use tinyint(1) or tinyint(2), it does not make any difference.
I always use tinyint(1) and int(11), I used several mysql clients (navicat, sequel pro).
It does not mean anything AT ALL! I ran a test, all above clients or even the command-line client...
Overload constructor for Scala's Case Classes?
In Scala 2.8 is there a way to overload constructors of a case class?
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What's valid and what's not in a URI query?
...he current standard for generic URIs is RFC 3986, which has this to say:
2.2. Reserved Characters
URIs include components and subcomponents that are delimited by characters in the "reserved" set. These characters are called "reserved" because they may (or may not) be defined as delimiters by the g...
What's the difference between lists enclosed by square brackets and parentheses in Python?
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Square brackets are lists while parentheses are tuples.
A list is mutable, meaning you can ch...
How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
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For fitting y = A + B log x, just fit y against (log x).
>>> x = numpy.array([1, 7, ...
How can I create a correlation matrix in R?
I have 92 set of data of same type.
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