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Re: Non-destructive array processing

by runrig (Abbot)
on Jan 20, 2003 at 23:34 UTC ( #228523=note: print w/ replies, xml ) Need Help??


in reply to Non-destructive array processing

Nice trick. I like it as a sort of answer to LISP-like linked lists without having to resort to 2-element array references:

my @array = qw(a b c d); my $r = sub { \@_ }->(@array); my $a = cdr($r); print "arr: @array\n"; print "a: @$a\n"; print "r: @$r\n"; $array[2]="hello"; print "arr: @array\n"; print "a: @$a\n"; print "r: @$r\n"; sub cdr { my $r = shift; my $a = sub { \@_ }->(@$r); shift @$a; $a; }


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