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All the Perl that's Practical to Extract and Report

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  • You have a heisenbug! [ic.ac.uk]
  • When this happened to me while working on a network-related task, I found that the time taken in stepping through the code was either allowing an unexpectedly ansyncronous call to complete, or allowing a remote resource to complete (unintentionally asyncronous).
  • I've had this problem before. In my case, I didn't appear to be iterating over a hash properly. However, when I stuck in debugging code to dump the hash, it worked fine. When I dropped to the debugger and manually inspected the hash, it still worked. As it turns out, the problem was because I was calling each on the hash and dying if I had problems. However, I was catching the die in an eval and reentered the subroutine with correct arguments (this was in a test, so you can see why). When I reentered,