Ruby Weekly is a weekly newsletter covering the latest Ruby and Rails news. At the last regular London Ruby User Group meetup, James Coglan gave a talk on how to implement a Scheme interpreter in 15 minutes. He recorded a video of the coding in progress beforehand so he could focus on the narration so unfortunately the video (available in a higher resolution here from Vimeo) is without sound. Ther
Ruby Weekly is a weekly newsletter covering the latest Ruby and Rails news. The Interactive Ruby Shell, more commonly known as IRB, is one of Ruby's most popular features, especially with new developers. You can bash out a one-liner, try a method you've just learned about, or even build a small algorithm or two without going the whole way to writing a complete program. I've not posted much about I
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Defining Methods Dynamically You have methods that can be defined more concisely if defined dynamically. def failure self.state = :failure end def error self.state = :error end becomes def_each :failure, :error do |method_name| self.state = method_name end Motivation I use Dynamically Define Method quite frequently. Of course, I default to defining methods explicitly, but at the point when duplica
Wizard Book n. Hal Abelson's, Jerry Sussman's and Julie Sussman's Structure and Interpretation of Computer Programs (MIT Press, 1984; ISBN 0-262-01077-1), an excellent computer science text used in introductory courses at MIT. So called because of the wizard on the jacket. One of the bibles of the LISP/Scheme world. Also, less commonly, known as the Purple Book. from The New Hacker's Dictionary, 2
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