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Overview

Scheme and Ruby are similar

• Ruby shares history with Scheme
  • Names: map, Proc(cedures), nil
  • bang! methods/procedures
  • Lexical scope => closures a.k.a. blocks
  • continuations
  • runtime evaluation
• garbage collected
• interpreted
• Purity of design

Scheme and Ruby are different

• Syntax
• Can be compiled as well
• Not object oriented (by default)

Scheme Basics

• Scheme has very simple syntax: (procedure arg1 arg2 arg3 ...)
• A few basic special forms
  • (if ...)
  • (lambda ...)
  • I think there are 3 others. Add them here

(define ...) (let ...) (letrec ...)

Equivalents from Ruby

• Array => List/Vector
• Hash => Hash Table
• Regex => Regex
• Blocks => Procedures
• Macros (e.g. acts_as_foo) => Macros
• Objects => Numerous object systems

Installation & Libraries

• Basic install guidelines
• Gems => Eggs

Getting things Done

• Shell scripts
• Web programming
• Databases
• GUI Apps
• Compiling
• FFI

Pick Your Style

• Imperative
• OOP
• Functional
• Stack
• Actor
• DSLs and Interpreters
  • Metaprogramming