6.4.16 The Operator .
This operator may only be used in the following ways:
- record
.
symbol - This yields the attribute value of the attribute of record whose
name is symbol. If there is no attribute in record whose
name is symbol, the expression yields the special symbol
nil
.
- list
.
number - This yields the element of list at position number. If
there is no element at position number in list, the
expression yields the special symbol
nil
.
- value
.
list - Here, list must be a list
<
e1,
e2, ...>
of
symbols and/or numbers. This expression serves as an abbreviation for
value.
e1.
e2...
.