erlang-shell - 在 Erlang shell 中显示长列表

Question

当我在 Erlang shell 中调用返回长列表或元组的函数时，列表会被截断，并在末尾显示 ... 以指示还有更多元素未显示。如何让 shell 显示整个列表？

例如:当输入 code:module_info(). 时，将返回以下内容:

[{module,code},
 {exports,[{objfile_extension,0},
           {load_file,1},
           {load_abs,1},
           {load_abs,2},
           {load_binary,3},
           {load_native_partial,2},
           {load_native_sticky,3},
           {delete,1},
           {purge,1},
           {soft_purge,1},
           {get_object_code,1},
           {stop,0},
           {root_dir,0},
           {lib_dir,0},
           {lib_dir,1},
           {lib_dir,2},
           {compiler_dir,0},
           {priv_dir,1},
           {stick_dir,1},
           {unstick_dir,1},
           {stick_mod,1},
           {unstick_mod,1},
           {is_sticky,1},
           {set_path,...},
           {...}|...]},
 {attributes,[{vsn,[225576456026721604984939683025195514980]},
              {deprecated,[{rehash,0,next_major_release}]}]},
 {compile,[{options,[{outdir,"/net/isildur/ldisk/daily_build/19_prebuild_master-opu_o.2016-06-21_20/otp_src_19/lib/kernel/src/../ebin"},
                     {i,"/net/isildur/ldisk/daily_build/19_prebuild_master-opu_o.2016-06-21_20/otp_src_19/lib/kernel/src/../include"},
                     warnings_as_errors,debug_info]},
           {version,"6.0.3"},
           {source,"/net/isildur/ldisk/daily_build/19_prebuild_master-opu_o.2016-06-21_20/otp_src_19/lib/kernel/src/code.erl"}]},
 {md5,<<169,180,113,244,195,188,176,68,162,6,74,100,65,
        30,60,100>>}]

我希望扩展 {set_path,...}, {...}|...]}, 以在 shell 中显示整个列表。

Answer 1

使用内置的shell函数rp/1，例如:

 rp(code:module_info()). 

rp(Term) 相当于 io:format("~p", [Term]) ，它将打印您提供的 erlang-term。查看类似问题here了解更多详情。