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.

 

1> rd(state,{age,sex}).state2> State = #state{age = 27,sex = 1}.#state{age = 27,sex = 1}3> State.#state{age = 27,sex = 1}4> io:format("~w~n",[State]).{state,27,1}ok5> tuple_to_list(State).[state,27,1]6> NewState = State#state{age=28}.#state{age = 28,sex = 1}7> State#state.age.279> record_info(fields,state).[age,sex]10> record_info(size,state).3

 

rd():在控制台中定义record.