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The bindings module is a light-weight alternative to the matchable egg together with some enhancements, in particular the bind macro, which is Common Lisp's destructuring-bind.
Contrary to matchable, there is no attempt to implement ellipses, Scheme's dotted lists must do. Instead of the match macro you should use bind-case.
In this implementation bindings are implemented in the Design by Contract style, i.e. using the contracts module. A corollary of this is, that the documentation is included in the module. By convention, there is a routine with the module's name, bindings, which when called with no argument
shows the exported symbols, namely
Choose one of: -------------- bind bind-case bind-case-lambda bind-case-lambda* bind-define bind-flat bind-flat-let* bind-lambda bind-lambda* bind-let bind-let* bind-letrec bind-loop bind-matches? bind-set! bindrec
which are all macros, while calling bindings with one of this symbols, e.g.
shows the documentation of this symbol in all it's glory, i.e. together with admissible forms and documentation
(forms: (bind pat xpr0 xpr . xprs)) "binds pattern variables of pat to subexpressions of xpr0 and executes xpr ..."
will show you
(forms: (bind-case xpr0 (pat (=> test?) xpr . xprs) (bind-case xpr0 (pat xpr . xprs)) (bind-case xpr0 (pat (=> test?) xpr . xprs) clause ...) (bind-case xpr0 (pat xpr . xprs) clause ...)) "matches xpr0 against a series of patterns [with fender test?, a thunk] and executes the body of the first matching pattern [satisfying test?]"
Another way to get the complete documentation is to use print-doclist from the contracts module. Issuing
(import bindings (only contracts print-doclist)) (with-output-to-file "bindings.docu" (lambda () (print-doclist)))
you'll get the complete documentation written to the file bindings.docu.
ju (at) jugilo (dot) de
Copyright (c) 2011, Juergen Lorenz All rights reserved.
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- initial import