Returns
a substring of a string
(substr string start [length])
The substr function starts
at the start character position of string and
continues for length characters.
Arguments
- string
-
- start
-
A positive integer indicating
the starting position in string. The first character in
the string is position 1.
- length
-
A positive integer specifying
the number of characters to search through in string. If length is not
specified, the substring continues to the end of string.
NoteThe first character
of string is character number 1.
This differs from other functions that process elements of a list
(like nth and ssname) that count the
first element as 0.
Return Values
A string.
Examples
Command: (substr
"abcde" 2)
"bcde"
Command: (substr
"abcde" 2 1)
"b"
Command: (substr
"abcde" 3 2)
"cd"
