enumerator

/ɪˈnuːməˌreɪtər/
noun
  1. A person who counts or lists things, especially someone who conducts a census or survey by collecting data from households.
    • As a census enumerator, she visited over 200 homes in one week.
    • The enumerator knocked on every door in the neighborhood to record the number of residents.
    • The government hired additional enumerators to ensure an accurate population count.
  2. In computing, a person or thing that assigns numbers to items in a set, or a function that iterates through a collection.
    • The programmer wrote an enumerator to loop through all the files in the folder.
    • The software uses an enumerator to assign unique IDs to each record.
    • In Python, the built-in enumerator function adds a counter to an iterable.
Synonyms
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