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DB<126> x $dbh
0 DBI::db=HASH(0x11e0bd0)
empty hash
It seems I can’t dump its content no matter how many stuff I assign to it by $dbh->{$a} = $v
why?
DBI handles are an example of inside out objects; they squirrel away their attributes where you in theory can’t get them except through their interface. (Unlike many newer implementations of inside out objects, they also have a tie interface that allows you to get and set attributes as if they were blessed hashes, but in a controlled way.)