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Block$-p

Change-block$

A copying macro that lets you create new block$-p structures, based on existing structures.

Syntax:

(change-block$ x 
               [:header <header>] 
               [:transations <transations>] 
               [:ommer-headers <ommer-headers>])

This is a sometimes useful alternative to make-block$. It constructs a new block$-p 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 std::defaggregate.

Macro: change-block$

(defmacro change-block$ (x &rest args)
  (std::change-aggregate 'block$
                         x args
                         '((:header . block$->header)
                           (:transations . block$->transations)
                           (:ommer-headers . block$->ommer-headers))
                         'change-block$
                         'nil))