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one%3f-i.ri
U:RDoc::AnyMethod[iI" one?:ETI"Array#one?;TF: publico:RDoc::Markup::Document: @parts[o: RDoc::Markup::Paragraph; [I"MReturns +true+ if exactly one element of +self+ meets a given criterion.;To: RDoc::Markup::BlankLine o; ; [I"cWith no block given and no argument, returns +true+ if +self+ has exactly one truthy element, ;TI"+false+ otherwise:;To:RDoc::Markup::Verbatim; [ I" [nil, 0].one? # => true ;TI" [0, 0].one? # => false ;TI" [nil, nil].one? # => false ;TI"[].one? # => false ;T: @format0o; ; [I"VWith a block given and no argument, calls the block with each element in +self+; ;TI"[returns +true+ if the block a truthy value for exactly one element, +false+ otherwise:;To; ; [I"8[0, 1, 2].one? {|element| element > 0 } # => false ;TI"7[0, 1, 2].one? {|element| element > 1 } # => true ;TI"8[0, 1, 2].one? {|element| element > 2 } # => false ;T; 0o; ; [I"YIf argument +obj+ is given, returns +true+ if <tt>obj.===</tt> exactly one element, ;TI"+false+ otherwise:;To; ; [ I"![0, 1, 2].one?(0) # => true ;TI""[0, 0, 1].one?(0) # => false ;TI""[1, 1, 2].one?(0) # => false ;TI".['food', 'drink'].one?(/bar/) # => false ;TI"-['food', 'drink'].one?(/foo/) # => true ;TI" [].one?(/foo/) # => false ;T; 0o; ; [I" Related: Enumerable#one?;T: @fileI" array.c;T:0@omit_headings_from_table_of_contents_below0I"oarray.one? -> true or false array.one? {|element| ... } -> true or false array.one?(obj) -> true or false ;T0[ I" (*args);T@1FI" Array;TcRDoc::NormalClass00