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(guile.info)About Procedures

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The Representation and Use of Procedures
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This section introduces the basics of using and creating Scheme
procedures.  It discusses the representation of procedures as just
another kind of Scheme value, and shows how procedure invocation
expressions are constructed.  We then explain how `lambda' is used to
create new procedures, and conclude by presenting the various shorthand
forms of `define' that can be used instead of writing an explicit
`lambda' expression.

Procedures as Values

Procedures are values like everything else.

Simple Invocation

How to write a simple procedure invocation.

Creating a Procedure

How to create your own procedures.

Lambda Alternatives

Other ways of writing procedure definitions.