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How do you detect where two line segments intersect? [closed]
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There’s a nice approach to this problem that uses vector cross products. Define the 2-dimensional vector cross product v × w to be vx wy − vy wx.
Suppose the two line segments run from p to p + r and from q to q + s. Then any point on the first...
Abstract class in Java
What is an "abstract class" in Java?
14 Answers
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Is it possible to Pivot data using LINQ?
I am wondering if it is possible to use LINQ to pivot data from the following layout:
6 Answers
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Add Keypair to existing EC2 instance
...n). I would however like to gain SSH access to these instances, is it possible to create a new Keypair and apply it to the instances so I can SSH in? Obtaining the exisiting pem file for the keypair the instances were created under is currently not an option.
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Why are Perl 5's function prototypes bad?
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Prototypes aren't bad if used correctly. The difficulty is that Perl's prototypes don't work the way people often expect them to. People with a background in other programming languages tend to expect prototypes to provide a mechanism for chec...
Why doesn't JavaScript support multithreading?
Is it a deliberate design decision or a problem with our current day browsers which will be rectified in the coming versions?
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Make a div fill the height of the remaining screen space
I am working on a web application where I want the content to fill the height of the entire screen.
33 Answers
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Generate a random point within a circle (uniformly)
...chimedes would have.
How can we generate a point uniformly in a triangle ABC, where |AB|=|BC|? Let's make this easier by extending to a parallelogram ABCD. It's easy to generate points uniformly in ABCD. We uniformly pick a random point X on AB and Y on BC and choose Z such that XBYZ is a parallelo...
How to compare two floating point numbers in Bash?
I am trying hard to compare two floating point numbers within a bash script. I have to variables, e.g.
17 Answers
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Using Java 8's Optional with Stream::flatMap
... Java 8 stream framework and friends make for some very concise java code, but I have come across a seemingly-simple situation that is tricky to do concisely.
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