4.9.1 list declarations

Syntax:

list name = expression_list;
list name = list_expression;

Purpose:

defines a list (of objects of possibly different types).

Default:

empty list

Example:

list l=1,"str"; l[1]; ==> 1 l[2]; ==> str ring r; listvar(r); ==> // r [0] *ring ideal i = x^2, y^2 + z^3; l[3] = i; l; ==> [1]: ==> 1 ==> [2]: ==> str ==> [3]: ==> _[1]=x2 ==> _[2]=z3+y2 listvar(r); // the list l belongs now to the ring r ==> // r [0] *ring ==> // l [0] list, size: 3 ==> // i [0] ideal, 2 generator(s)