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Line 1: ~~[[fa: عملگرهای بولی]]~~ {{Short description\|Expression in a computer program}} In [[computer science]], a '''Boolean expression''' (also known as '''logical expression''') is an [[Expression (programming)\|expression]] used in [[programming language]]s that produces a [[Boolean value]] when evaluated. A Boolean value is either '''true''' or '''false'''. A Boolean expression may be composed of a combination of the Boolean constants '''True/~~Yes~~False''' or '''~~False~~Yes/No''', [[Boolean data type\|Boolean-typed]] variables, Boolean-valued operators, and [[Boolean-valued function]]s.<ref>{{citation \| last1 = Gries \| first1 = David \| author1-link = David Gries \| last2 = Schneider \| first2 = Fred B. \| author2-link = Fred B. Schneider Line 14 ⟶ 12: \| year = 1993}}.</ref> Boolean expressions correspond to [[propositional formula]]s in logic and are aassociated ~~[[special case]] of~~to [[Boolean circuit]]s.<ref>{{citation \| last = van Melkebeek \| first = Dieter \| isbn = 9783540414926