Description:

Sketchy LISP is an introduction to functional programming in Scheme.
Functional programming is an approach that focuses on the evaluation of expressions. Programs are formed by combining functions. Most functions are free of side effects which allows to examine programs formally and prove properties of algorithms.
This tutorial provides a step-by-step introduction to functional programming in Scheme. It covers various aspects of the language like data types, conditions, recursion, list processing, lexical scoping, closures, function definitions, dynamic typing, etc. By means of numerous examples of varying complexity, it takes the reader on an entertaining and informative tour through the language.