Difference between revisions of "Self"

Revision as of 21:22, 10 February 2009

Self is used in the definition of a Variable to refer to that variable. Usually, a variable cannot refer to itself -- because it creates a cyclic dependency -- so you cannot use Self in common expressions. One exceptions are in function Dynamic() refer to Self at a preceding Time period, e.g.

Variable X := Dynamic(10, Self[Time-1] * (1 + growth))

The last parameter of Dynamic is an expression that can refer to Self, provided it is for a previous Time, as in this case.

The other exception is in IntraTable, a new feature not officially released that allows cells of a table to refer to each other, using Self.

@@ Line 1: / Line 1: @@
-Self is used in the definition of a Variable to refer to that variable.  Usually, a variable cannot refer to itself -- because it creates a cyclic dependency -- so you cannot use Self in common expressions. One exceptions are in function [Dynamic]()  refer to Self at a preceding Time period, e.g.
+Self is used in the definition of a Variable to refer to that variable.  Usually, a variable cannot refer to itself -- because it creates a cyclic dependency -- so you cannot use Self in common expressions. One exceptions are in function [[Dynamic]]()  refer to Self at a preceding Time period, e.g.
   Variable X := Dynamic(10, Self[Time-1] * (1 + growth))
 The last parameter of Dynamic is an expression that can refer to Self, provided it is for a previous Time, as in this case.
-The other exception is in [IntraTable], a new feature not officially released that allows cells of a table to refer to each other, using Self.
+The other exception is in [[IntraTable]], a new feature not officially released that allows cells of a table to refer to each other, using Self.