How to remove keys from hash in Perl?

问题

How do I remove the key from an existing map?

if (exists $sampleMap{1})
{
      #Here I want to remove the "1" key from sampleMap
}

回答1:

Use delete for deleting the hash keys:

if (exists $sampleMap{1})
{
      delete $sampleMap{1}; #Here I want remove the "1" key from sampleMap.
}

For more details, take a look at delete.

来源：https://stackoverflow.com/questions/18480114/how-to-remove-keys-from-hash-in-perl