Higher Order Procedures (in Ruby)
Wednesday, December 13, 2006 by Nate Murray. 
Functions that take other functions as a parameter or return functions as a result are called Higher-Order Procedures. This concept was made clear to me through the MIT video lectures of Structure and Interpretation of Computer Programs (1985 MIT Press) by Hal Abelson and Gerald Jay Sussman. I have created a small presentation that tries to boil down these powerful concepts and converted the Lisp code to Ruby. The copy is taken almost directly from SICP with a few paraphrases and additional examples added. You can view the presentation with notes at Slide-Share here. Or you can download the presentation as:
- PDF (preferred)
- syntax-highlighted text
- power-point-generated html(very ugly)