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teaching material for functional programming,scheme is a progmatic language in functional programming paradigm with flexibility due to the membership of Lisp programming family

As you read through this book, we will introduce several abstract ideas in as concrete a way as possible. As you become familiar and comfortable with these ideas, you will begin to think of the abstractions as actual concrete objects. Having already gone through this process ourselves, we've chosen to call computer science ªthe discipline of concrete abstractionsº; if that seems too peculiar to fathom, we invite you to read the book and then reconsider the notion