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  1. (.~) :: ((a -> Identity b) -> s -> Identity t) -> b -> s -> t

    generic-lens Data.Generics.Internal.VL

    No documentation available.

  2. (.~) :: Setter s t a b -> b -> s -> t

    lens-family Lens.Family2

    Set all referenced fields to the given value.

  3. (.~) :: ASetter s t a b -> b -> s -> t

    lens-family-core Lens.Family

    Set all referenced fields to the given value.

  4. (.~) :: Lens' s a -> a -> s -> s

    hegg Data.Equality.Graph.Lens

    Synonym for set

  5. (.~) :: ASetter s t a b -> b -> s -> t

    stack Stack.Prelude

    (.~) assigns a value to the target. It's the same thing as using (%~) with const: 

    l .~ x = l %~ const x
    See set if you want a non-operator synonym. Here it is used to change 2 fields of a 3-tuple: 
    >>> (0,0,0) & _1 .~ 1 & _3 .~ 3
(1,0,3)

  6. (.~) :: ASetter s t a b -> b -> s -> t

    universum Universum

    Deprecated: Use corresponding function from lens or microlens package

  7. (.~) :: Boomerang e tok a b -> Boomerang e tok b c -> Boomerang e tok a c

    boomerang Text.Boomerang.Prim

    Reverse composition, but with the side effects still in left-to-right order.

  8. (.~~) :: (Backprop a, Backprop b, Reifies s W) => Lens' b a -> BVar s a -> BVar s b -> BVar s b

    backprop Numeric.Backprop

    An infix version of setVar, meant to evoke parallels to .~ from lens. With normal values, you can set something in a value with a lens: 

    x & myLens .~ y
    would "set" a part of x :: b, specified by myLens :: Lens' a b, to a new value y :: a. 
    xVar & myLens .~~ yVar
    would "set" a part of xVar :: BVar s b (a BVar holding a b), specified by myLens :: Lens' a b, to a new value given by yVar :: BVar s a. The result is a new (updated) value of type BVar s b. This is the main way to set values inside BVars of container types. Note that this does not incurr the performance overhead issues of viewVar and ^^., and is fairly cheap.

  9. (.~~) :: (Num a, Num b, Reifies s W) => Lens' b a -> BVar s a -> BVar s b -> BVar s b

    backprop Numeric.Backprop.Num

    .~~, but with Num constraints instead of Backprop constraints.

  10. (.~&) :: SBool -> SBool -> SBool

    sbv Data.SBV

    Symbolic nand

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