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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...
Pandas DataFrame column to list [duplicate]
I am pulling a subset of data from a column based on conditions in another column being met.
4 Answers
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Which types can be used for Java annotation members?
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It's specified by section 9.6.1 of the JLS. The annotation member types must be one of:
primitive
String
an Enum
another Annotation
Class
an array of any of the above
It does seem restrictive, but no doubt there are reasons for it.
Also n...
Why is super.super.method(); not allowed in Java?
I read this question and thought that would easily be solved (not that it isn't solvable without) if one could write:
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Abstract class in Java
What is an "abstract class" in Java?
14 Answers
14
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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...
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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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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