Boolean built-in type Boolean built-in type. Cast an [int] value to a boolean value, this method will return [code]true[/code] if called with an integer value different to 0 and [code]false[/code] in other case. Cast a [float] value to a boolean value, this method will return [code]true[/code] if called with a floating point value different to 0 and [code]false[/code] in other case. Cast a [String] value to a boolean value, this method will return [code]true[/code] if called with a non empty string and [code]false[/code] in other case. Examples: [code]bool('False')[/code] returns [code]true[/code], [code]bool('')[/code] returns [code]false[/code].