EXTENSIBLE VALUE TYPES IN CELLS

摘要

Individual cells within a spreadsheet may contain an extensible value as defined by an extensible value type. The extensible value type is a user defined value type that is incorporated into the spreadsheet as a supported data type. Generally, the extensible data types provide support for types that are not internally defined by a spreadsheet. When the extensible value type is defined, an associated set of functions are developed to operate on the type. These functions are added to the set of base functions supported by the spreadsheet. The functions, therefore, behave in a substantially similar manner to the set of base spreadsheet functions. The extensible values that are contained within the cells may be acted upon in the same way that supported base types are acted upon.