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fromMaybe :: forall a. a -> Maybe a -> a

Takes a default value, and a Maybe value. If the Maybe value is Nothing the default value is returned, otherwise the value inside the Just is returned.

fromMaybe x Nothing == x
fromMaybe x (Just y) == y

withDefault :: forall a. a -> Maybe a -> a

If the given value is Nothing, return the default. Otherwise return the value.

withDefault 2 Nothing -- 2
withDefault 2 (Just 1) -- 1

intercalate :: forall f m. Foldable f => Monoid m => m -> f m -> m

Fold a data structure, accumulating values in some Monoid, combining adjacent elements using the specified separator.

For example:

> intercalate ", " ["Lorem", "ipsum", "dolor"]
= "Lorem, ipsum, dolor"

> intercalate "*" ["a", "b", "c"]
= "a*b*c"

> intercalate [1] [[2, 3], [4, 5], [6, 7]]
= [2, 3, 1, 4, 5, 1, 6, 7]

intercalate :: forall f m. Foldable1 f => Semigroup m => m -> f m -> m

Fold a data structure using a Semigroup instance, combining adjacent elements using the specified separator.

surround :: forall f m. Foldable f => Semigroup m => m -> f m -> m

fold but with each element surrounded by some fixed value.

For example:

> surround "*" []
= "*"

> surround "*" ["1"]
= "*1*"

> surround "*" ["1", "2"]
= "*1*2*"

> surround "*" ["1", "2", "3"]
= "*1*2*3*"

consMax :: forall a f. Foldable f => Ord a => a -> f a -> a

consMin :: forall a f. Foldable f => Ord a => a -> f a -> a

peek :: forall s w a. ComonadStore s w => s -> w a -> a

track :: forall t w a. ComonadTraced t w => t -> w a -> a

buildLeaf :: forall e f p v. ElementBuilder e f p v => e -> f p -> v

add :: forall a. Semiring a => a -> a -> a

append :: forall a. Semigroup a => a -> a -> a

conj :: forall a. HeytingAlgebra a => a -> a -> a

const :: forall a b. a -> b -> a

Returns its first argument and ignores its second.

const 1 "hello" = 1

It can also be thought of as creating a function that ignores its argument:

const 1 = \_ -> 1

disj :: forall a. HeytingAlgebra a => a -> a -> a

div :: forall a. EuclideanRing a => a -> a -> a

gcd :: forall a. Eq a => EuclideanRing a => a -> a -> a

The greatest common divisor of two values.

genericAdd :: forall a rep. Generic a rep => GenericSemiring rep => a -> a -> a

A Generic implementation of the add member from the Semiring type class.

genericAdd' :: forall a. GenericSemiring a => a -> a -> a

genericAppend :: forall a rep. Generic a rep => GenericSemigroup rep => a -> a -> a

A Generic implementation of the append member from the Semigroup type class.

genericAppend' :: forall a. GenericSemigroup a => a -> a -> a

genericConj :: forall a rep. Generic a rep => GenericHeytingAlgebra rep => a -> a -> a

A Generic implementation of the conj member from the HeytingAlgebra type class.

genericConj' :: forall a. GenericHeytingAlgebra a => a -> a -> a

genericDisj :: forall a rep. Generic a rep => GenericHeytingAlgebra rep => a -> a -> a

A Generic implementation of the disj member from the HeytingAlgebra type class.

genericDisj' :: forall a. GenericHeytingAlgebra a => a -> a -> a

genericImplies :: forall a rep. Generic a rep => GenericHeytingAlgebra rep => a -> a -> a

A Generic implementation of the implies member from the HeytingAlgebra type class.

genericImplies' :: forall a. GenericHeytingAlgebra a => a -> a -> a

genericMul :: forall a rep. Generic a rep => GenericSemiring rep => a -> a -> a

A Generic implementation of the mul member from the Semiring type class.

genericMul' :: forall a. GenericSemiring a => a -> a -> a

genericSub :: forall a rep. Generic a rep => GenericRing rep => a -> a -> a

A Generic implementation of the sub member from the Ring type class.

genericSub' :: forall a. GenericRing a => a -> a -> a

implies :: forall a. HeytingAlgebra a => a -> a -> a

lcm :: forall a. Eq a => EuclideanRing a => a -> a -> a

The least common multiple of two values.

leftDiv :: forall a. DivisionRing a => a -> a -> a

Left division, defined as leftDiv a b = recip b * a. Left and right division are distinct in this module because a DivisionRing is not necessarily commutative.

If the type a is also a EuclideanRing, then this function is equivalent to div from the EuclideanRing class. When working abstractly, div should generally be preferred, unless you know that you need your code to work with noncommutative rings.

max :: forall a. Ord a => a -> a -> a

Take the maximum of two values. If they are considered equal, the first argument is chosen.

min :: forall a. Ord a => a -> a -> a

Take the minimum of two values. If they are considered equal, the first argument is chosen.

mod :: forall a. EuclideanRing a => a -> a -> a

mul :: forall a. Semiring a => a -> a -> a

rightDiv :: forall a. DivisionRing a => a -> a -> a

Right division, defined as rightDiv a b = a * recip b. Left and right division are distinct in this module because a DivisionRing is not necessarily commutative.

If the type a is also a EuclideanRing, then this function is equivalent to div from the EuclideanRing class. When working abstractly, div should generally be preferred, unless you know that you need your code to work with noncommutative rings.

sub :: forall a. Ring a => a -> a -> a

call :: forall s. IsString s => Monoid s => s -> s -> s

Syntax for CSS function call.

ract :: forall g s. RightAction g s => s -> g -> s

maddL :: forall x r. LeftModule x r => x -> x -> x

maddR :: forall x r. RightModule x r => x -> x -> x

mmulR :: forall x r. RightModule x r => x -> r -> x

msubL :: forall x r. LeftModule x r => x -> x -> x

msubR :: forall x r. RightModule x r => x -> x -> x

bindTo :: forall f o. f -> o -> f

defaultUndef :: forall a. a -> a -> a

join :: forall a. JoinSemilattice a => a -> a -> a

meet :: forall a. MeetSemilattice a => a -> a -> a

pathAppend :: forall m. XPathLike m => m -> m -> m

Put a path seperator between two XPaths and return the resulting XPath.

pathAppendNSx :: forall m. XPathLike m => m -> m -> m

Useful variant of pathAppend needed for some XPath implementations; insert a separator with a dummy namespace ("x") for the second XPath fragment. For example: root /? "record" /? "identifier" == "/x:record/x:identifier".

and :: forall a. Binary a => a -> a -> a

join :: forall a. JoinSemilattice a => a -> a -> a

maddL :: forall x r. LeftModule x r => x -> x -> x

maddR :: forall x r. RightModule x r => x -> x -> x

meet :: forall a. MeetSemilattice a => a -> a -> a

mmulR :: forall x r. RightModule x r => x -> r -> x

msubL :: forall x r. LeftModule x r => x -> x -> x

msubR :: forall x r. RightModule x r => x -> x -> x

nand :: forall α. HeytingAlgebra α => α -> α -> α

nor :: forall α. HeytingAlgebra α => α -> α -> α

or :: forall a. Binary a => a -> a -> a

patch :: forall a d. Patch a d => a -> d -> a

reciprocal :: forall n n1 n2 a r. Add n2 1 n1 => Add n1 1 n => Arity a n => Divisible r => Eq r => EuclideanRing r => Leadable r => Ord r => Pad n2 (Polynomial r) a => Peel r r => Unpad n2 (Polynomial r) a => a -> a -> a

Computes the reciprocal of the first polynomial in the extension whose minimal polynomial is provided by the second polynomial

xor :: forall a. Binary a => a -> a -> a

xor :: forall a. HeytingAlgebra a => a -> a -> a

xor :: forall α. HeytingAlgebra α => α -> α -> α

_add :: forall a. HasAdd a => a -> a -> a

_and :: forall a. HasAnd a => a -> a -> a

_divide :: forall a. HasDivide a => a -> a -> a

_multiply :: forall a. HasMultiply a => a -> a -> a

_or :: forall a. HasOr a => a -> a -> a

_power :: forall a. HasPower a => a -> a -> a

_remainder :: forall a. HasRemainder a => a -> a -> a

_subtract :: forall a. HasSubtract a => a -> a -> a

add :: forall a. HasAdd a => a -> a -> a

always :: forall b a. a -> b -> a

Always returns the first argument.

"anything" :always 1 -- 1

This is the constant function.

and :: forall a. HasAnd a => a -> a -> a

asTypeOf :: forall a. a -> a -> a

A type-restricted version of always.

[] :asTypeOf [1] -- [] :: Array Int

decorate :: forall a b. Decorate a b => a -> b -> a

divide :: forall a. HasDivide a => a -> a -> a

getAllArgs :: forall all given. OptArgs all given => all -> given -> all

kestrel :: forall b a. a -> b -> a

K combinator - kestrel

K

Λ a b . a → b → a

λ x y . x

max :: forall a. HasGreater a => a -> a -> a

Returns the greater value.

max 1 2 -- 2
max 2 1 -- 2

maxByOrder :: forall a. Ord a => a -> a -> a

min :: forall a. HasLess a => a -> a -> a

Returns the lesser value.

min 1 2 -- 1
min 2 1 -- 1

minByOrder :: forall a. Ord a => a -> a -> a

multiply :: forall a. HasMultiply a => a -> a -> a

or :: forall a. HasOr a => a -> a -> a

or :: forall a. Bitwise a => a -> a -> a

plus :: forall a b. Summable a b => a -> b -> a

plus :: forall a b. Summable a b => a -> b -> a

power :: forall a. HasPower a => a -> a -> a

remainder :: forall a. HasRemainder a => a -> a -> a

scale :: forall a. Space a => a -> (a -> a)

subtract :: forall a. HasSubtract a => a -> a -> a

withAttribute :: forall a b. HasAttribute a b => a -> b -> a

Add an attribute to element node

sans :: forall m a b. At m a b => a -> m -> m