Datatype Functions

IsBoolean	Returns if a string can be interpreted as a localized boolean value.
IsDate	Returns if a string can be interpreted as a localized date.
IsFloat	Returns if a string can be interpreted as a localized floating point value.
IsInteger	Returns if a string can be interpreted as an integer value.
IsLong	Returns if a string can be interpreted as a 64-bits integer value.
IsNull	Returns if an expression is NULL.
IsNumber	Returns if an string can be interpreted as a number, i.e. an Integer, a Long or a Date.
SizeOf	Returns the memory used by a specific datatype.
TypeOf	Returns the datatype of an expression.

See also