Hoogle Search
Within LTS Haskell 24.6 (ghc-9.10.2)
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$$ ) :: Binding r s i => (i -> r) -> Number r i -> rrelational-schemas Database.Custom.PostgreSQL Unsafely apply sequence number. Only safe to build corresponding record type.
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$$! ) :: (i -> r) -> Number r i -> rrelational-schemas Database.Custom.PostgreSQL Unsafely apply sequence number.
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$$ ) :: Binding r s i => (i -> r) -> Number r i -> rrelational-schemas Database.Custom.SQLServer Unsafely apply sequence number. Only safe to build corresponding record type.
(
$$! ) :: (i -> r) -> Number r i -> rrelational-schemas Database.Custom.SQLServer Unsafely apply sequence number.
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$$ ) :: Binding r s i => (i -> r) -> Number r i -> rrelational-schemas Database.Custom.SQLite3 Unsafely apply sequence number. Only safe to build corresponding record type.
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$$! ) :: (i -> r) -> Number r i -> rrelational-schemas Database.Custom.SQLite3 Unsafely apply sequence number.
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$$ ) :: (Monoid s, IsString s) => s -> s -> sstring-combinators Data.String.Combinators Put two string-likes above eachother (separated by a newline).
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verset Verset Strict (call-by-value) application operator. It takes a function and an argument, evaluates the argument to weak head normal form (WHNF), then calls the function with that value.
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$< ) :: Contravariant f => f b -> b -> f averset Verset This is >$ with its arguments flipped.
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$> ) :: Functor f => f a -> b -> f bverset Verset Flipped version of <$.
Examples
Replace the contents of a Maybe Int with a constant String:>>> Nothing $> "foo" Nothing
>>> Just 90210 $> "foo" Just "foo"
Replace the contents of an Either Int Int with a constant String, resulting in an Either Int String:>>> Left 8675309 $> "foo" Left 8675309
>>> Right 8675309 $> "foo" Right "foo"
Replace each element of a list with a constant String:>>> [1,2,3] $> "foo" ["foo","foo","foo"]
Replace the second element of a pair with a constant String:>>> (1,2) $> "foo" (1,"foo")