5.1.57 insert

Syntax:

insert ( list_expression, expression )
insert ( list_expression, expression, int_expression )

Type:

list

Purpose:

inserts a new element (expression) into a list at the beginning, or (if called with 3 arguments) after the given position (the input is not changed).

Example:

list L=1,2; insert(L,4,2); ==> [1]: ==> 1 ==> [2]: ==> 2 ==> [3]: ==> 4 insert(L,4); ==> [1]: ==> 4 ==> [2]: ==> 1 ==> [3]: ==> 2