How to find unused variables? [closed] - bash

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Closed 9 years ago.
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How to scan a bash script (or a list of scripts), and detect which variables were defined but never read?

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Fast Folding Algorithm Implementation [closed]

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Closed 8 years ago.
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I have some times series data and I would like to use an algorithm to detect periodic events in this time series.
I read that Fast Folding Algorithm is used to detect pulsars stars, but I didnt find any example code of how it is done. Where can I find it?

Best links to start up with Linq [closed]

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I would like to know when exactly we need to use Linq, Why it is used for and complete knowledge on it.
Please suggest me links/books for it.
Thank you.
Try starting with LINQ 101. You would find lots of examples if you just google with "LINQ".

obfuscate emails with ruby to protect against harvesters [closed]

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Is there a simple gem I could install to show email-addresses in HTML-views only in an obfuscated way?
It would be perfect, if the email-addresses were converted into images.
If that is not possible, a simple replace of the # with "-at-"?
Or how could I use the solution from this thread:
How to protect my e-mail address from spambots
Whats wrong in using sub or gsub to achieve the same
"example#example.com".sub("#","-at-") #=> example-at-example.com
"example#example.org".sub("#","{at}") #=> example{at}example.org

Suggest a book on spatial data structures [closed]

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Please advice a book on spatial data structures. I'm interested in Quadtrees and Octrees.
This one has good credentials.
Handbook of data structures and applications

Where can I get a good, concise LINQ cheatsheet? [closed]

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I'd like a cheetsheet that contains the most common keywords and syntax, all contained on a single pdf page.
http://weblogs.asp.net/bradvincent/archive/2008/11/01/linq-cheat-sheet.aspx
I had this hanging on my wall for a while.
I like "101 LINQ Samples" from [MSDN].
LINQ to SQL Cheat Sheet in PDF form, containing both C# and VB.NET syntax.

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