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464 Formula Functions Reference Appendix C
Character Functions
Shift, Shift Into
Shift shifts an item or n items from the front to the back of the list or expression. Shifts items from back
to front if n is negative. Shift Into shifts items in place.
Reverse, Reverse Into
Reverse reverses the characters in the string. Reverse Into reverses the characters in place.
Concat Items
Concat Items converts a list of string expressions into one string, with each item separated by a
delimiter. The delimiter is a blank, if unspecified.
Substitute, Substitute Into
The first argument is a string, the second is a pattern, and the third is a replacement string. Substitute
finds all matches to the pattern in the string, and replaces them with the replacement string. Substitute
Into does the same substitution in place.
Regex
The first argument is the source string that Regex searches for a match to the pattern. The second
argument is the pattern, in the form of a regular expression. The Formula Editor prompts you for these
two required arguments.
Tip: For more information about using regular expressions, search the Internet for regular expression
tutorial.
By default, Regex performs a case-sensitive search and returns the parts of the source string that match
the pattern you specified (or returns MISSING if the match fails). There are two optional arguments
that you can add. You can type a third argument—the format—that specifies the string to return. If you
choose, you can use regular expressions to specify replacement text in the returned string. If you specify
the third argument, you can also specify IGNORECASE so that Regex ignores capitalization when
searching the source string for a match.
Table C.1 Regex Examples
Sample Regex function
Regex( "@ q3 #", "([a-z])([0-9])" )
String that is returned
q3
The function is case sensitive, so q3 matches but
Q3 would not.
Regex( "@ Q3 #", "([a-z])([0-9])",
"\0",IGNORECASE)
Regex( "@ Q3 #", "([a-z])([0-9])",
"\2\1",IGNORECASE)
Q3
Although \0 is the default argument, it is required
in this example so that IGNORECASE can be
specified.
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