Boolean types
A boolean type represents the set of Boolean truth values denoted by the predeclared constants true and false. The predeclared boolean type is bool; it is a defined type.
翻译：boolean类型表示
09090909
09090909
0909090990
A boolean type represents the set of Boolean truth values denoted by the predeclared constants true and false. The predeclared boolean type is bool; it is a defined type.
翻译：boolean类型表示
09090909
09090909
0909090990
