Magic Number (programming)

Magic Number (programming)

In computer programming, the term magic number has multiple meanings. It could refer to one or more of the following:

  • A constant numerical or text value used to identify a file format or protocol; for files, see List of file signatures
  • Distinctive unique values that are unlikely to be mistaken for other meanings (e.g., Globally Unique Identifiers)
  • Unique values with unexplained meaning or multiple occurrences which could (preferably) be replaced with named constants

Read more about Magic Number (programming):  Unnamed Numerical Constants, Magic GUIDs, Magic Debug Values

Famous quotes containing the words magic and/or number:

    The most refined skills of color printing, the intricate techniques of wide-angle photography, provide us pictures of trivia bigger and more real than life. We forget that we see trivia and notice only that the reproduction is so good. Man fulfils his dream and by photographic magic produces a precise image of the Grand Canyon. The result is not that he adores nature or beauty the more. Instead he adores his camera—and himself.
    Daniel J. Boorstin (b. 1914)

    There is not to be found, in all history, any miracle attested by a sufficient number of men, of such unquestioned good sense, education, and learning, as to secure us against all delusion in themselves ... beyond all suspicion of any design to deceive others ... and at the same time attesting facts, performed in such a public manner, and in so celebrated a part of the world, as to render the detection unavoidable.
    David Hume (1711–1776)