Continuations in Ruby

Erica Kastner · December 12, 2007

A week ago, Dr. Frens spoke about continuations in Ruby at the Michigan Ruby Users Group. It was very interesting as it brought back my college days when I learned Scheme and functional programming concepts. I always enjoyed functional programming because it presents such a different way of thinking through problems.

I was going to blog about his presentation, but it turns out he blogged all his own notes already. But what I found interesting is the sort of hybrid nature that Ruby has. It is both an object-oriented language and it also supports some functional programming concepts. The drawback Dr. Frens found was that Ruby doesn’t do tail recursion optimization, so it’s not really worth using continuation passing style functions. Interesting, nonetheless!

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