Help us understand the problem. What is going on with this article?

HaskellでElixirのようなパイプラインで記述したいとき

More than 3 years have passed since last update.

関数合成の本来の目的は置いておいて、関数合成の記述よりElixirのパイプラインの記述の方が分かりやすい気がしたので。

【関数合成の記述】

someFunc :: IO ()
someFunc = do
  let a = sum . take 5 . reverse . map (*3) $ [1..10]
  print a

【パイプラインの記述】

someFunc :: IO ()
someFunc = do
  let a = [1..10]
          |> map (*3)
          |> reverse
          |> take 5
          |> sum
  print a

infixl 0 |>
(|>) :: a -> (a -> b) -> b
(|>) = flip ($)
--a |> f = f a

勉強会では関数合成の記述は英語の順序で、パイプラインの記述は日本語の順序だから、日本人にはパイプラインの方が馴染みやすいのではという意見も。。。

Why not register and get more from Qiita?
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away
Comments
Sign up for free and join this conversation.
If you already have a Qiita account
Why do not you register as a user and use Qiita more conveniently?
You need to log in to use this function. Qiita can be used more conveniently after logging in.
You seem to be reading articles frequently this month. Qiita can be used more conveniently after logging in.
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away