I try to avoid using eval and code that can dies (exceptions being the exception). Why wasn't this written as something like 

package DBM::Deep::Array;
sub _get_self {
  ref $_[0] eq ARRAY ? tied( @{$_[0]} ) : $_[0]
}

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possibly with a Scalar::Util::reftype()?

eval is reasonably expensive as it creates a new lexical scope and dieing and unwinding the stack is also expensive. Is there an advantage to using it rather than the code above? updated:silly benchmark added and removed!

In reply to Re: eval-blocks and Test::Builder by fergal
in thread eval-blocks and Test::Builder by dragonchild

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