Perl Style: Defensive Programming

  • use strict
  • #!/usr/bin/perl -w
  • Check all syscall return values, printing $!
  • Watch for external program failures in $?
  • Check $@ after eval"" or s///ee.
  • Parameter asserts
  • #!/usr/bin/perl -T
  • Always have an else after a chain of elsifs
  • Put commas at the end of lists to so your program won’t break if someone inserts another item at the end of the list.

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Copyright © 1998, Tom Christiansen All rights reserved.



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