x=(100, "Kernobe", ~);Note that the length of list x is 2, and it is equal to the fixed length list y=(100, "kernobe"), except that x can be expanded or shrinked. The tilde at the end of the list is not a special element; it just signals that the list is capable of changing length. For example
x=(100, "Kernobe", ~); x#3="Schwartz"; (100, Kernobe, Schwartz) x#5="Dark Helmet"; (100, Kernobe, Schwartz, [], Dark Helmet)
If you plan to create a list x by starting with an empty list and adding new elements one by one, the list should be initialized as
x=(~);Note that both (~) and () are empty list, but new elements can only be added to (~).
List plays a critical role in the operation of functions, as calling a function f with f(a,b,c) is equivalent to the multiplication operation between the function f and the list of arguments (a, b, c).
Variable length lists have the following attribute functions
For both fixed length and variable length lists
oz 2009-12-22