Converts a value of any data type to a Boolean value.

This function is similar to CBool in Visual Basic.

The result of the conversion depends on the data type of <value>, as follows:

Boolean: <value> is returned unchanged.

Categorical: The conversion results in a value of False if the categorical value is empty {} and a value of True for all other categorical values.

Date: If <value> is 30 December 1899 00:00:00, the return value is False, otherwise it is True.

Long or Double: If <value> is zero, the return value is False, otherwise it is True.

NULL values: If <value> is NULL, the return value is False.

Object: If the object has a default property, the value of that property is converted. Otherwise an error occurs.

Text: The string is parsed according to the locale to extract the value. An error occurs if the string does not contain a recognizable Boolean value (numeric, or a string representing True or False).