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Let-binding

Change-let-binding

Modifying constructor for let-binding structures.

Syntax

(change-let-binding x 
                    [:bindings <bindings>] 
                    [:hypotheses <hypotheses>])

This is an often useful alternative to make-let-binding.

We construct a new let-binding structure that is a copy of x, except that you can explicitly change some particular fields. Any fields you don't mention just keep their values from x.

Definition

This is an ordinary change- macro introduced by defprod.

Macro: change-let-binding

(defmacro change-let-binding (x &rest args)
  (std::change-aggregate 'let-binding
                         x args
                         '((:bindings . let-binding->bindings)
                           (:hypotheses . let-binding->hypotheses))
                         'change-let-binding
                         'nil))