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bisequence :: (Bitraversable t, Applicative f) => t (f a) (f b) -> f (t a b)relude Relude.Foldable.Reexport Sequences all the actions in a structure, building a new structure with the same shape using the results of the actions. For a version that ignores the results, see bisequence_.
bisequence ≡ bitraverse id id
Examples
Basic usage:>>> bisequence (Just 4, Nothing) Nothing
>>> bisequence (Just 4, Just 5) Just (4,5)
>>> bisequence ([1, 2, 3], [4, 5]) [(1,4),(1,5),(2,4),(2,5),(3,4),(3,5)]
bisequence_ :: (Bifoldable t, Applicative f) => t (f a) (f b) -> f ()relude Relude.Foldable.Reexport Evaluate each action in the structure from left to right, and ignore the results. For a version that doesn't ignore the results, see bisequence.
Examples
Basic usage:>>> bisequence_ (print "Hello", print "World") "Hello" "World"
>>> bisequence_ (Left (print "Hello")) "Hello"
>>> bisequence_ (Right (print "World")) "World"
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relude Relude.List.Reexport The subsequences function returns the list of all subsequences of the argument.
Laziness
subsequences does not look ahead unless it must:>>> take 1 (subsequences undefined) [[]] >>> take 2 (subsequences ('a' : undefined)) ["","a"]
Examples
>>> subsequences "abc" ["","a","b","ab","c","ac","bc","abc"]
This function is productive on infinite inputs:>>> take 8 $ subsequences ['a'..] ["","a","b","ab","c","ac","bc","abc"]
decodeSequenceLenIndef :: (r -> a -> r) -> r -> (r -> r') -> Decoder s a -> Decoder s r'serialise Codec.Serialise.Decoding Decode an indefinite sequence length.
decodeSequenceLenN :: (r -> a -> r) -> r -> (r -> r') -> Int -> Decoder s a -> Decoder s r'serialise Codec.Serialise.Decoding Decode a sequence length.
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vinyl Data.Vinyl Push an outer layer of interpretation functor into each named field.
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vinyl Data.Vinyl.Class.Method Push an outer layer of interpretation functor into each named field.
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vinyl Data.Vinyl.Core Push an outer layer of interpretation functor into each field.
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singletons-base Control.Monad.Singletons No documentation available.
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singletons-base Control.Monad.Singletons No documentation available.