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    • Member-value

    Change-member-value

    Modifying constructor for member-value structures.

    Syntax
    (change-member-value x 
                         [:name <name>] 
                         [:value <value>]) 
    

    This is an often useful alternative to make-member-value.

    We construct a new member-value 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 fty::defprod.

    Macro: change-member-value

    (defmacro change-member-value (x &rest args)
      (std::change-aggregate 'member-value
                             x args
                             '((:name . member-value->name)
                               (:value . member-value->value))
                             'change-member-value
                             'nil))