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How does Dijkstra's Algorithm and A-Star compare?
I was looking at what the guys in the Mario AI Competition have been doing and some of them have built some pretty neat Mario bots utilizing the A* (A-Star) Pathing Algorithm.
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Doctrine2: Best way to handle many-to-many with extra columns in reference table
...objects, linked between them with a one-to-many and many-to-one relation.
http://groups.google.com/group/doctrine-user/browse_thread/thread/d1d87c96052e76f7/436b896e83c10868#436b896e83c10868
Once a relation has data, it's no more a relation !
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How to profile a bash shell script slow startup?
My bash shell takes up to 3-4 seconds to start up, while if I start it with --norc it runs immediately.
7 Answers
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How to create a hex dump of file containing only the hex characters without spaces in bash?
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How do I set the maximum line length in PyCharm?
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How do I target only Internet Explorer 10 for certain situations like Internet Explorer-specific CSS
How do I target only Internet Explorer 10 for certain situations like Internet Explorer-specific CSS or Internet Explorer-specific JavaScript code?
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Is Java Regex Thread Safe?
...= email_pattern.matcher(email);
return matcher.matches();
}
}
see http://zoomicon.wordpress.com/2012/06/01/validating-e-mails-using-regular-expressions-in-java/ (near the end) regarding the RegEx pattern used above for validating e-mails (in case it doesn't fit ones needs for e-mail validat...
How to bind a List to a ComboBox?
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In HTML I can make a checkmark with ✓ . Is there a corresponding X-mark?
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How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
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