delete EXPR
Deletes the specified value from its hash array. Returns the deleted
value, or the undefined value if nothing was deleted. Deleting from
$ENV{} modifies the environment. Deleting from an array tied to a DBM
file deletes the entry from the DBM file. (But deleting from a tie()d
hash doesn't necessarily return anything.)
The following deletes all the values of an associative array:
foreach $key (keys %ARRAY) {
delete $ARRAY{$key};
}
(But it would be faster to use the undef() command.) Note that the
EXPR can be arbitrarily complicated as long as the final operation is
a hash key lookup:
delete $ref™>[$x][$y]{$key};
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