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sgrif's profile
Miss Dada 🏳️‍⚧️
Miss Dada 🏳️‍⚧️
Miss Dada  🏳️‍⚧️
@sgrif

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Miss Dada  🏳️‍⚧️

@sgrif

Co lead of the http://crates.io  team. Creator of @dieselframework. Former host of @_bikeshed and @_yakshave. Former Rails comitter. Enby. they/them

Albuquerque, NM
patreon.com/seantheprogram…
Joined November 2008

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    1. please wear a mask‏ @mountain_ghosts 14 Jun 2019
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      would like Promise.flatMap to exist

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    2. please wear a mask‏ @mountain_ghosts 14 Jun 2019
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      [Promise<[T]>] -> Promise<[T]>

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    3. please wear a mask‏ @mountain_ghosts 14 Jun 2019
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      this isn't really flatMap it's more like internal concat

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    4. Miss Dada  🏳️‍⚧️‏ @sgrif 14 Jun 2019
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      Replying to @mountain_ghosts

      It's sequenceA

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    5. please wear a mask‏ @mountain_ghosts 14 Jun 2019
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      Replying to @sgrif

      does this generalise for any monad m? i.e. [m [a]] -> m [a] or even n (m (n a)) -> m (n a), if m and n are monads like, you're flattening one monad that's got another one sandwiched in between

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    6. Miss Dada  🏳️‍⚧️‏ @sgrif 14 Jun 2019
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      Replying to @mountain_ghosts

      Yeah, `sequenceA . (fmap join)` should (not 100% sure I have syntax correct there, but use sequenceA to get `m (n (n a))`, and then fmap join gives you `m (n a)`

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      Miss Dada  🏳️‍⚧️‏ @sgrif 14 Jun 2019
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      Replying to @sgrif @mountain_ghosts

      Sorry, I missed part of that. This does not generalize to all monads, it's from `Traversable` which includes most but not all monads

      2:51 PM - 14 Jun 2019
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