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概要

paiza.ioでelixirやってみた。
Task使ってみた。

サンプルコード

1..100
|> Stream.take(10)
|> Task.async_stream(fn i ->
	Process.sleep(10)
	IO.puts(to_string(i))
end)
|> Enum.to_list()
|> IO.inspect

task = Stream.interval(100) 
|> Task.async_stream(&(&1))
|> Enum.take(5)
Enum.map(task, &(IO.inspect(&1)))

task = Task.async(fn -> 
	1 + 1 
end)
Task.await(task)
|> IO.inspect

tasks = [Task.async(fn -> 
	1 + 1 
end), Task.async(fn -> 
	2 + 3 
end)]
Task.await_many(tasks)
|> IO.inspect

tasks =
	for i <- 1..10 do
		Task.async(fn ->
			Process.sleep(i * 5)
			i
		end)
	end
tasks_with_results = Task.yield_many(tasks, 1000)
results =
	Enum.map(tasks_with_results, fn {task, res} ->
		res || Task.shutdown(task, :brutal_kill)
	end)
for {:ok, value} <- results do
	IO.inspect(value)
end

実行結果

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10
[
  ok: :ok,
  ok: :ok,
  ok: :ok,
  ok: :ok,
  ok: :ok,
  ok: :ok,
  ok: :ok,
  ok: :ok,
  ok: :ok,
  ok: :ok
]
{:ok, 0}
{:ok, 1}
{:ok, 2}
{:ok, 3}
{:ok, 4}
2
[2, 5]
1
2
3
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5
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7
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10

成果物

以上。

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