I think it’s time to start moving into some relatively modern questions.

547. What is an associative array?

• An unordered collection of data elements that are indexed by keys.

548. Each element of an associative array is a pair consisting of a _______ and a _______.

• key and a value

549. True or False? Java supports associative arrays?

• True. As a matter of fact, Perl, Python, Ruby, C++, C## and F## do too.

550. What are associative arrays called in Perl?

• hashes

551. Why are associative arrays in Perl called hashes?

• Because their elements are stored and retrieved with a hash function

552. What character does a hash in Perl begin with?

%

553. In Perl, each key is a _____ and each value is a _______.

• string

• scalar

554. In Perl, subscripting is done using _______ and _______.

• braces and keys

555. In Perl, how are elements removed from hashes?

• using delete

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