pipe-k

v0.9.6

STATUS

Passing

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VISIBILITY

Public

PUBLISHED

5 years ago

SIZE

3 KB

Returns the left-to-right Kleisli composition of the provided functions, each of which must return a value of a type supported by [`chain`](#chain).

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pipeK (

:...Function

) : Function

Returns the left-to-right Kleisli composition of the provided functions, each of which must return a value of a type supported by chain.

R.pipeK(f, g, h) is equivalent to R.pipe(f, R.chain(g), R.chain(h)).

Example

//  parseJson :: String -> Maybe *
     //  get :: String -> Object -> Maybe *

     //  getStateCode :: Maybe String -> Maybe String
     const getStateCode = R.pipeK(
       parseJson,
       get('user'),
       get('address'),
       get('state'),
       R.compose(Maybe.of, R.toUpper)
     );

     getStateCode('{"user":{"address":{"state":"ny"}}}');
     //=> Just('NY')
     getStateCode('[Invalid JSON]');
     //=> Nothing()

Argument

...Function

Returns

Function