Erlang入門：構建application練習1

標籤：erlang   入門教程   application   

1、定義application回調模組

%% 檔案名稱為bank_app.erl-module(bank_app).%% 指定behaviour為application-behaviour(application). %% 匯出application回調模組的函數-export([start/2, stop/1]). %% 啟動application時調用start(_Type, _Args) -> ("Start ~p ...", [?MODULE]),{ok, self()}.%% 停止application時調用stop(_State) -> ?I("Stop ~p!", [?MODULE]),ok.

2、載入application

application:load({application, bank, [{mod, {bank_app, []}}]}).

application:load/1的參數為application的資源描述，

{application, bank, [{mod, {bank_app, []}}]}中，
指明application的名稱為bank，回調模組為bank_app

application的資源描述具體定義可以參見文檔：
http://www.erlang.org/doc/man/app.html

3、啟動application

application:start(bank). 

4、停止application

application:stop(bank).

5、卸載application

application:unload(bank).

Erlang入門：構建application練習1