Eval statement keywords

Use keywords to perform complex operations within eval statements.

The following table describes the keywords that you can use to perform operations.

Table 1. Table of valid eval statement keywords
Keyword	Synopsis of Keyword Function
APPEND	Appends data to a list or object.
APPENDUNIQUE	Appends data to a list or object only if it does not already exist within the list.
CAT	Concatenates a series of items together.
DELETE	Deletes an item from a list.
FIRSTVALID	Processes a list of possible answers and takes the first valid answer; that is, the first answer that is not null.
LENGTH	Indicates the length of a list or the number of items it holds.
LOOKUP	Allows the use of lookup tables and enables the use of a default human-readable return value in the event of a lookup failure.
IPTOLONG	Converts an IPv4 address into a 32 bit integer.
LONGTOIP	Converts a 32 bit integer into an IPv4 address.
REGEXPMATCH	Return the value of the first set of parenthesis in a expression.
TIMESTAMP	Generates a human readable timestamp from a 32 bit integer.

The following topics describe how to use the eval statement keywords.