learn:functional-programming
差異處
這裏顯示兩個版本的差異處。
| 兩邊的前次修訂版前次修改 下次修改 | 前次修改 下次修改兩邊的下次修訂版 | ||
| learn:functional-programming [2022/06/21 08:19] – admin_wi1d5ky | learn:functional-programming [2022/06/21 08:21] – [Either] admin_wi1d5ky | ||
|---|---|---|---|
| 行 16: | 行 16: | ||
| ## Functor | ## Functor | ||
| - | |||
| ### Either | ### Either | ||
| 行 24: | 行 23: | ||
| * `Either.Right` 會繼續跑，而 `Either.Left` 則會忽略後續運算，執意將手上的值傳下去 | * `Either.Right` 會繼續跑，而 `Either.Left` 則會忽略後續運算，執意將手上的值傳下去 | ||
| * < | * < | ||
| + | |||
| + | ```javascript | ||
| + | const addOne = num => Right(R.add(1)); | ||
| + | const error = () => Left(new Error(' | ||
| + | |||
| + | Right(10) | ||
| + | .chain(addOne) | ||
| + | .map(R.add(2)) | ||
| + | .inspect() // Right(13) | ||
| + | | ||
| + | Right(10) | ||
| + | .chain(error) | ||
| + | .map(R.add(2)) | ||
| + | .inspect() // Left(Error: error) | ||
| + | |||
| + | ``` | ||
| ### Future | ### Future | ||
| > TODO | > TODO | ||
| + | |||
| ### Identity | ### Identity | ||
| > TODO | > TODO | ||
| + | |||
| ### IO | ### IO | ||
| 行 50: | 行 67: | ||
| > TODO | > TODO | ||
| + | |||
| ### State | ### State | ||
learn/functional-programming.txt · 上一次變更: 2022/06/21 08:47 由 admin_wi1d5ky