in reply to perl: restrict perl from automaticaly creating a hash branches on check

The behavior that you're complaining about is called autovivification. See How can I check if a key exists in a multilevel hash? from perlfaq4 for some tips on accomplishing what you want to do.

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Re^2: perl: restrict perl from automaticaly creating a hash branches on check
by alex5161 (Novice) on Nov 06, 2014 at 17:41 UTC
    Exactly!! Thanks! I Go to read!