• Discussed higher-order functions like map and filter. See LISP Higher Order Function Tutorial.
• Discussed use of funcall, apply, and eval
• Presented lambda expressions and closures
• Discussed how to create instances of objects using lambdas and closures
• Began discussion of meta-interpreter for interacting with these objects
• Discussed delegation as a model for inheritance, which we will return to in Lecture 7. See Object-Oriented Lambda Example.

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