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Monthly Archives: July 2007

How to be more confident about your own programs: an example using Perl

Thursday, July 26, 2007

Programming is one of the most difficult branches of applied mathematics; the poorer mathematicians had better remain pure mathematicians. It was Edsger W. Dijkstra, the famous computer scientist, who wrote these words in his note named “How do we tell truths that might hurt?“. I am sure that many people didn’t like to read them, [...]

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Swapping the values of two variables

Wednesday, July 11, 2007

In my previous post I have promised that I would put here some of my technical notes (JFFs). Today I am posting JFF1, which presents a very well-known problem in a non-traditional way. The problem is how to swap the values of two variables without using another temporary one. I start by presenting the properties [...]

Filed in Algorithms, Mathematics, Programming | Tagged , , | Comments (2)