traverse

v0.9.6

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Passing

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PUBLISHED

5 years ago

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3 KB

Maps an [Applicative](https://github

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traverse (

of:Function,

f:Function,

traversable:*

) : *

Maps an Applicative-returning function over a Traversable, then uses sequence to transform the resulting Traversable of Applicative into an Applicative of Traversable.

Dispatches to the traverse method of the third argument, if present.

Example

// Returns `Maybe.Nothing` if the given divisor is `0`
     const safeDiv = n => d => d === 0 ? Maybe.Nothing() : Maybe.Just(n / d)

     R.traverse(Maybe.of, safeDiv(10), [2, 4, 5]); //=> Maybe.Just([5, 2.5, 2])
     R.traverse(Maybe.of, safeDiv(10), [2, 0, 5]); //=> Maybe.Nothing

Arguments

of: Function

f: Function

traversable: *

Returns

*