It seems to me that delete doesn't work on stashes (%A:: in your case), only on hashes. Use either $A::bbb = undef as suggested above, or  { local $A::bbb = 3 }

But actually, this is a good point: why doesn't it work on stashes? That's a nice feature.

In reply to Re: deleting glob does not undef values? by dk
in thread deleting glob does not undef values? by bdimych

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