Okay, so there are several meanings of "deprecated":
  1. "perl -w" will warn, but it probably won't be removed for awhile (e.g. split to @_).
  2. "perl -w" will warn, and it will be removed in the next major release.
  3. "perl -w" won't warn, but the docs call it "deprecated" or possibly "vaguely deprecated;" who knows what will happen?
delete $a[$n] and exists $a[$n] are deprecated(3), whatever that means.

In reply to Re^7: New behavior of 'each' with respect to references by educated_foo
in thread New behavior of 'each' with respect to references by davido

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