Macro: LIST-ELEMENTS

Macro: List-Elements

LIST-ELEMENTS list of gdl objects [macro]
Returns a listing of the elements of an aggregate, with an optional the-element expression and filter. If an expression is given, the list of results from the expressions is returned. If no expression is given, a list of the objects themselves is returned.
arguments:
aggregate GDL aggregate object
(e.g. from a :sequence (:size .) :object specification)
optional arguments:
expression Expression using the-element, Default Value: NIL
Similar to a the-object reference
filter Function of one argument, Default Value: NIL
Can be used to filter the result list

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