... Doug's Home Page . ... S-Lang structures are converted to hash references in Perl , as shown below. ... n\n ; print Structure contents:\n ; # you can treat $s as a reference to a hash array in most respects, except: # - the order of the keys in the array matches that of the # original S-Lang structure # while ( my ( $ key , $ value ) = each %{$s} ) { print key $ key \t has a value of $ value \n ; } print \n ; $$s{afield} = 'a changed field value '; print ...