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Yes, autovivification is capricious. It would be a great improvement if it only happened in lvalue contexts (ordinary value contexts could simply short-circuit and return null). If I may add an adjective to your canonical list, I'd like to present The Simple: if Perl has to go through (dereference) a reference to get to something, autovivification happens (obviously, it also happens if the reference is itself used in lvalue context).

The subject does, from time to time, come up here, as in Looping through a hash reference is creating a key...?.


Caution: Contents may have been coded under pressure.

In reply to Re: The Bad, the Ugly, and the Good of autovivification by Roy Johnson
in thread The Bad, the Ugly, and the Good of autovivification by tlm

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    [ambrus]: what kind of restaurant?
    [LanX]: with different specialized employees in different rooms
    [LanX]: communication overhead calls for sensible management
    [ambrus]: "different specialized employees in different rooms" => so, there's a cleaner guy who cleans up the vomit from the bathroom every morning?
    [erix]: makes me think of MMM too (mythical man month): "adding more people to a project makes it slower"
    [erix]: that should be "to an already-too-late- project" I think
    [ambrus]: oh yes, we have a pretty good example of that when they reorganized the grill place in the restaurant nearby.
    [ambrus]: it now has two more people working there, and they're serving slower and more expensive.

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