in reply to
Re^3: I wrote some clever code - can the comment "defuse" it? (stab at restructuring)
in thread I wrote some clever code - can the comment "defuse" it?
There are alternatives to either destroying @letters or using an index. Two I can think of off the top of my head are local @letters (unless it's lexical, which it probably is) or a temporary variable (my @l = @letters and change the code to use that instead). I can't say I like using an additional temp var here, but it is another possibility :)