singleton

  1. Noun.  (context, playing cards) A playing card that is the only one of its suit in a hand, especially at bridge.
  2. Noun.  A single object, especially one of a group.
  3. Noun.  (computing) A class that may not be instantiated more than once, i.e. that implements the singleton design pattern.
  4. Noun.  (mathematics) A set with exactly one element.

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This entry was last updated on RefTopia from its source on 3/20/2012.