OK, in this specific context: if you use a symbolic ref, it's easier to accidently allow the user access to subs they shouldn't have access to. For example, in a text-based RPG, there's quite likely a win sub, which is called when the user wins. If you use a symbolic-ref based implementation, unless you're careful, the user can simply type "win" to win the game. In a hash-based system, you'd have to explicitly put the win key in the hash, so it's quite unlikely to happen accidently.

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Warning: Unless otherwise stated, code is untested. Do not use without understanding. Code is posted in the hopes it is useful, but without warranty. All copyrights are relinquished into the public domain unless otherwise stated. I am not an angel. I am capable of error, and err on a fairly regular basis. If I made a mistake, please let me know (such as by replying to this node).

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