character limit -- I haven't generally seen "lossy" flat_maps. I think all I've seen are ones that "strictly grow". Disagree?
Are you suggesting that monads don’t have a “compelling reason”? (Not that Rust has monads, naturally)
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the only one I think I've heard was having a generic `(F . G) T => (G . F) T` (Vec<Option<T>> => Option<Vec<T>>) via
@sgriff. -
err
@sgrif But even that hurts my brain (How do I get None? One None? All Nones???) - 17 more replies
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