exists works safely only for the last step. See autovivification if you don't want to type
if (    exists $hash{keyA}
    and exists $hash{keyA}{keyB}
    and exists $hash{keyA}{keyB}{keyE}
    and exists $hash{keyA}{keyB}{keyE}{keyF}
    ) {

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لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: exists() for a hash child-key creates the parent key? Bug? by choroba
in thread exists() for a hash child-key creates the parent key? Bug? by AnonymousPerl1

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