94 Programming Language Q&A

94 Programming Language Q&A

I think it’s time to start moving into some relatively modern questions. An unordered collection of data elements that are indexed by keys.

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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