Scripting Guide - SAS

Chapter 8 Programming Methods 197
Lists and Expressions
Table 8.4 Functions for manipulating lists or expressions (Continued)
Function Syntax Explanation
Insert
Into
Shift
Shift Into
Reverse
Reverse
Into
Sort List
Sort List
Into
Sort
Ascending
Sort
Descendin
g
Insert
Into(list|expr,
item, position)
Insert
Into(list|expr,
item)
x = Shift(list|expr)
x = Shift(list|expr,
n)
Shift
Into(list|expr)
Shift
Into(list|expr, n)
x=Reverse(list|expr
)
Reverse
Into(list|expr)
x=Sort
List(list|expr)
Sort List
Into(list|expr)
Sort
Ascending(list|matr
ix)
Sort
Descending(list|mat
rix)
Same as insert, but does it in place. List or expression must be
an L-value.
Shift an item or n items from the front to the back of the list
or expression. Shift items from back to front if n is negative.
Shift items in place.
Reverse the order of elements of a list or terms of an
expression.
Reverse the order of elements of a list or terms of an
expression in place.
Sort the elements of a list or the terms of an expression.
Numbers sort low, followed by the name value of names,
strings, or operators. For example 1+2 is lower than 1-2
because the name value Add sorts lower than the name value
Subtract. {1,2} sorts lower than {1,3}, which sorts lower than
{1,3,0}. {1000} sorts lower than {“a”}, but {a} and {“a”} sort as
equal.
Sort the elements of a list or terms of an expression in place.
Returns a copy of a list or matrix with the items in ascending
order.
Returns a copy of a list or matrix with the items in
descending order.
Loc Sorted Loc Sorted(A, B) Creates a matrix of subscript positions where the values in
matrix A match the values in matrix B. A must be a matrix
sorted in ascending order.