Re: exists $foo[7] and delete $foo[7]

[Nick Ing-Simmons <nick@ing-simmons.net>]

Tom Christiansen <tchrist@chthon.perl.com> writes:
>
>I really don't understand why there should be a difference then between
>delete and undef.  And if there's no difference, delete shouldn't be there.

The same could have been said for hashes - 

   undef $hash{'foo'};
and 
   delete $hash{'foo'};

are only distinguishable with exists.

We have found uses for the distinction in hashes.
We could for arrays too - e.g. tie'ing and array to a sparse file.

-- 
Nick Ing-Simmons

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References to:

Tom Christiansen <tchrist@chthon.perl.com>

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