Return dimensions of arguments, or lengths if dim==NULL.
Just a toy to return dim() when it's sensible and length() elsewise # items must be collection or list of character strings, e.g. output of ls()
A vector of character strings identifying the objects of interest as would be returned by, e.g.
A list, each element of which gives the object dimensions if there are any, and the length if not.
Carl Witthoft, firstname.lastname@example.org
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