善待Erlang 代码 -- 巧用 user_default

这是一篇水文

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很好用的一个技巧

http://www.erlang.org/doc/man/shell_default.html

http://www.cnblogs.com/me-sa/archive/2012/03/04/erlang0043.html

https://gist.github.com/wardbekker/1300812

http://inaka.net/blog/2012/12/03/some-erlang-magic/

还有一个小技巧,

在shell 中加载头文件中的头文件, 可以使用rr/1, 也可以这样做:

 redink:src redink$ ls
 lproto.app.src        lproto.erl        proto            simple.proto        user_default.erl
 redink:src redink$ cat user_default.erl
 -module(user_default).
 -include("simple_pb.hrl").
 redink:src redink$ ls ../include/
 simple_pb.hrl

这样在shell 中就不需要再使用rr/1 来加载了

Erlang/OTP  [erts-6.3] [source] [-bit] [smp::] [async-threads:] [hipe] [kernel-poll:false] [dtrace]

Eshell V6.  (abort with ^G)
> #person{name = <<"redink">>, address = <<"beijing">>, phone_number = , age = }.
#person{name = <<"redink">>,address = <<"beijing">>,
        phone_number = ,age = ,location = undefined}

看起来非常方便.