These were the questions asked in the OP --

What are your strategies for avoiding those 'doh' moments? ...are there things I could do now to reduce the number of silly mistakes I make?

-- not how to avoid object destructor confusion which is a solved issue. use strict and use warnings might be a bit trite but it is the best advice to a newbie who asks for newbie advice, not "use 4-arg substr instead of lvalue substr" or almost any of the rest of the PBP. Which for the most part would not be good advice but showing off.

In reply to Re^7: Avoiding silly programming mistakes by Your Mother
in thread Avoiding silly programming mistakes by missingthepoint

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