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Return to Enumeration, Enumerator definition or Enumerator declaration

An Enumerator is a convenient abstraction for feeding data into an iteratee from an arbitrary data source. Typically the enumerator will take care of any necessary resource cleanup associated with the data source. Because the enumerator knows exactly when the iteratee has finished reading data, it will do the resource cleanup (such as closing a file) at exactly the right time – neither too early nor too late. However, it can do this without needing to know about, or being co-located to, the implementation of the iteratee – so enumerators and iteratees form an example of separation of concerns.

Snippet from Wikipedia: Enumerator

Enumerator may refer to:

• Iterator (computer science)
• An enumerator in the context of iteratees
• in computer programming, a value of an enumerated type
• Enumerator (computer science), a Turing machine that lists elements of some set S.
• a census taker, a person performing door-to-door around census, to count the people and gather demographic data.
• a person employed in the counting of votes in an election.
• Enumerator polynomial

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Snippet from Wikipedia: Enumerator (computer science)

An enumerator is a Turing machine with an attached printer. The Turing machine can use that printer as an output device to print strings. Every time the Turing machine wants to add a string to the list, it sends the string to the printer. Enumerator is a type of Turing machine variant and is equivalent with Turing machine.

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