Returns an integer that is the number of characters in a string
(strlen [string]...)
Arguments
A string.
Return Values
An integer. If multiple string arguments are provided, strlen returns the sum of the lengths of all arguments. If you omit the arguments or enter an empty string, strlen returns 0.
Examples
Command: (strlen "abcd")
4
Command: (strlen "ab")
2
Command: (strlen "one" "two" "four")
10
Command: (strlen)
0
Command: (strlen "")
0
