Created
December 11, 2017 05:51
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Elixirにおけるwithの挙動
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defmodule Etc do | |
def hello do | |
IO.puts "Hello" | |
end | |
def return_ok do | |
{:ok, "ok"} | |
end | |
def return_err do | |
{:error, :eonet} | |
end | |
def return_err2 do | |
{:error, "error occured."} | |
end | |
def do_process do | |
with {:ok, content} <- return_ok(), | |
{:ok, content2} <- return_err(), | |
{:ok, content3} <- return_ok(), | |
{:ok, content4} <- return_err2() | |
do | |
IO.inspect content <> content2 | |
else | |
{:error, :eonet} -> IO.inspect(:error) | |
{:error, content} -> IO.inspect(content) | |
end | |
end | |
end | |
Etc.hello | |
Etc.return_ok | |
Etc.return_err | |
Etc.do_process |
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