Mining ActiveSupport: Object#returning

K combinator in Ruby:

If you’re into functional programming at all, you probably know right away what the K combinator is. For the rest of us, this article is helpful (if a bit on the academic side, but that’s about par for the course for most reading about functional topics). Basically, the K combinator is a function of two arguments, that merely returns the first argument. The second argument is useful only for the side-effects it has on the first argument. The implementation of this in Ruby is beautifully succinct:

Full article: http://weblog.jamisbuck.org/2006/10/27/mining-activesuppo...