Rule of Three

From Wikipedia, the free encyclopedia

Rule of three may refer to:

• Rule of three (medicine), judgement of likelihood of harm in drug trials.
• Rule of three (Wiccan), a tenet of Wicca
• Rule of three (mathematics), a computation method in mathematics
• Rule of three (writing), a principle of writing
• Rule of three (play), a series of one-act plays by Agatha Christie
• Rule of three (aviation), a rule of descent in aviation
• Rule of three (C++ programming), a rule of thumb that says that if a class has one of the following - destructor, copy constructor, assignment operator - it probably needs all three
• Rule of three (programming), a code Refactoring rule of thumb.
• In survival skills, the rule of three is a rule of thumb for prioritizing needs

It may also refer to:

• Rule of thirds, a compositional rule of thumb in photography