Trivia question: why is the following code a Really Bad Idea: 
foreach (@callbacks) {
  $_->(@args);
}

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Normally things like this do not trip me up, but when I eventually tracked down some strange behavior to the above chunk of code, I was... surprised, to say the least.

Please hold off for a while on explaining what's happening; I'm pretty sure I understand it, and I'd like to give others a chance to puzzle over it a bit first.

In reply to Action at a great distance by sfink

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