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fromEither :: b -> Either a b -> b #130

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davidchambers opened this issue Jan 15, 2016 · 1 comment

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good first contribution

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davidchambers commented Jan 15, 2016

This was suggested by @Bpless as a way to extract the b from a value of type Either a b. It's analogous to fromMaybe :: a -> Maybe a -> a.

Usage:

> S.fromEither(NaN, S.Left('XXX'))
NaN

> S.fromEither(NaN, S.Right(42))
42

The text was updated successfully, but these errors were encountered:

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svozza commented Jan 15, 2016

Oh nice, I'd really like this function.

davidchambers added the good first contribution label

davidchambers mentioned this issue

getOrElse instance method on either ramda/ramda-fantasy#111

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wennergr added a commit to wennergr/sanctuary that referenced this issue


          Add S.fromEither to pull out values from either

c2b9fb8

S.fromEither :: b -> Either a b -> b

Closes: sanctuary-js#130

wennergr added a commit to wennergr/sanctuary that referenced this issue


          Add S.fromEither to pull out values from either

d269f79

S.fromEither :: b -> Either a b -> b

Closes: sanctuary-js#130

wennergr mentioned this issue

Add S.fromEither to pull out values from either #229

Merged

wennergr added a commit to wennergr/sanctuary that referenced this issue


          Add S.fromEither to pull out values from either

fea90f9

S.fromEither :: b -> Either a b -> b

Closes: sanctuary-js#130

wennergr added a commit to wennergr/sanctuary that referenced this issue


          Add S.fromEither to pull out values from either

be1f26e

S.fromEither :: b -> Either a b -> b

Closes: sanctuary-js#130

davidchambers closed this as completed in #229

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