学习:record用法

详情请参考官网：http://www.erlang.org/doc/reference_manual/records.html

http://www.erlang.org/doc/programming_examples/records.html

1. record本质上是tuple.

2.获取record的结构相关的信息的函数：

To
each module using records, a pseudo function is added during compilation to
obtain information about records:

record_info(fields, Record) -> [Field]

record_info(size, Record) -> Size

Size is the
size of the tuple representation, that is one more than the number of
fields.

In
addition, #Record.Name returns the index in the tuple
representation of Name of the
record Record. Name must be
an atom.

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