Scripting Guide - SAS

136 Data Structures Chapter 7
Lists
Table 7.1 List Operators (Continued)
Operator and Function Syntax Explanation
Remove()
Remove From()
Remove(list, ,
)
Remove From(list,
, )
Returns a copy of the list with the n items
deleted, starting from the indicated
position (i). If n is omitted, the item at i is
deleted. If n and i are omitted, the item at
the end is removed. This function does not
change the original list.
Deletes n items from the list, starting from
the indicated position (i). If n is omitted,
the item at i is deleted. If n and i are
omitted, the item at the end is removed.
This function does change the original list.
Shift() Shift(list, ) Returns a copy of the list with n items
shifted from the front of the list to the end
of the list. If n is omitted, the first item is
moved to the end of the list. This function
does not change the original list.
Shift Into() Shift Into(list, ) Shifts n items from the front of the list to
the end of the list. If n is omitted, the first
item is moved to the end of the list. This
function does change the original list.
Sort List() Sort List(list) Returns a copy of the list sorted in
ascending order. This function does not
change the original list.
Sort List Into() Sort List Into(list) Sorts the list in ascending order. This
function does change the original list.
Sort Ascending() Sort Ascending(list) Returns a copy of the list sorted in
ascending order. This function does not
change the original list.
Sort
Descending()
Sort Descending(list)
Returns a copy of the list sorted in
descending order. This function does not
change the original list.
Reverse() Reverse(list) Returns a copy of the list with the items in
reverse order. This function does not
change the original list.
Reverse Into() Reverse Into(list) Reverses the order of the items in the list.
This function does change the original list.