12.2.8 Extracting a Subsequence from a Multifield Value

This function extracts a specified range from a multifield value and returns a new multifield value containing just the subsequence.

Syntax

(subseq$ <multifield-value>
              <begin-integer-expression>
              <end-integer-expression>)

where the second and third arguments are integers specifying the begin and end fields of the desired subsequence in <multifield-expression>.

Example

CLIPS> (subseq$ (create$ hammer drill wrench pliers) 3 4)
(wrench pliers)
CLIPS> (subseq$ (create$ 1 "abc" def "ghi" 2) 1 1)
(1)
CLIPS>