exists « Hash « Perl






  1. Perl
  2. Hash
  3. exists
1.Determine if a particular key exists
2.If an entry exist
3.The exists function returns true if a hash key (or array index) has been defined, and false if not.
4.To tell if a given key name exists in a hash, you can use the exists operator.
5.Using 'if exists' to check the entry in hash