Writing code like 
$$very{nested}{hash}= $something
   unless exists $$very{nested}{hash};

[download]
will the common subexpression for accessing the item be optimized? Deparse doesn't show anything interesting but that's not conclusive. Does anybody know more about this, or can interpret a deeper kind of dump?

—John

In reply to Are common access expressions optimized? by John M. Dlugosz

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