Search results

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

add :: forall x y z. Add x y z => x -> y -> z

and :: forall b1 b2 b3. And b1 b2 b3 => b1 -> b2 -> b3

div :: forall x y z. Div x y z => x -> y -> z

eq :: forall b1 b2 b3. Eq b1 b2 b3 => b1 -> b2 -> b3

gcd :: forall x y z. GCD x y z => x -> y -> z

imp :: forall b1 b2 b3. Imp b1 b2 b3 => b1 -> b2 -> b3

max :: forall x y z. Max x y z => x -> y -> z

min :: forall x y z. Min x y z => x -> y -> z

mod :: forall x y r. Mod x y r => x -> y -> r

mul :: forall x y z. Mul x y z => x -> y -> z

or :: forall b1 b2 b3. Or b1 b2 b3 => b1 -> b2 -> b3

sub :: forall x y z. Sub x y z => x -> y -> z

trich :: forall x y r. Trich x y r => x -> y -> r

xor :: forall b1 b2 b3. Xor b1 b2 b3 => b1 -> b2 -> b3

hmap :: forall f a b. HMap f a b => f -> a -> b

hmapWithIndex :: forall f a b. HMapWithIndex f a b => f -> a -> b

mapping :: forall f a b. Mapping f a b => f -> a -> b

reduce :: forall f i o. Reducible f i o => f -> i -> o

lact :: forall g s. LeftAction g s => g -> s -> s

convertOptions :: forall t i o. ConvertOptions t i o => t -> i -> o

defaults :: forall defaults provided all. Defaults defaults provided all => defaults -> provided -> all

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

new :: forall f a o. f -> a -> o

Call new on the function with an array or pseudoarray of arguments

dot :: forall p n. ToPos n p => Semiring n => p -> p -> n

Get the dot product of two vectors

mapProduct :: forall mp a b. MapProduct mp a b => mp -> a -> b

putInsideMod :: forall r p n. ToRegion n r => AsPosEndo n p => EuclideanRing n => r -> p -> p

Put a position inside a region by using the modulus operator

act :: forall m s. Action m s => m -> s -> s

Convert a value of type @m@ to an action on @s@ values.

at :: forall c k r. Monoid r => Lookup c k r => c -> k -> r

This simple helper works on any Lookup instance where the return type is a Monoid, and is the same as lookup except that it returns a t instead of a Maybe t. If lookup would return Nothing, then at returns mempty.

at :: forall c k r. Monoid r => Lookup c k r => c -> k -> r

This simple helper works on any Lookup instance where the return type is a Monoid, and is the same as lookup except that it returns a t instead of a Maybe t. If lookup would return Nothing, then at returns mempty.

setCtx :: forall props' props ctx. WithContextProps props' props ctx => ctx -> props' -> props

adjacentSibling :: forall a b c. IsExtensibleSelector a => ToVal a => Combine b c => a -> b -> c

child :: forall a b c. IsExtensibleSelector a => ToVal a => Combine b c => a -> b -> c

dbg :: forall s a. Show s => s -> a -> a

descendant :: forall a b c. IsExtensibleSelector a => ToVal a => Combine b c => a -> b -> c

diff :: forall a d. Diff a d => a -> a -> d

generalSibling :: forall a b c. IsExtensibleSelector a => ToVal a => Combine b c => a -> b -> c

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

pursxStringAnonymous :: forall accumulator next res. PursxStringAnonymous accumulator next res => accumulator -> next -> res

pursxValAnonymous :: forall accumulator next res. PursxValAnonymous accumulator next res => accumulator -> next -> res

set :: forall s t a b @sym lenses. IsSymbol sym => ParseSymbol sym lenses => ConstructBarlow lenses Function s t a b => b -> s -> t

add :: forall a b c r. Arith a b c r => a -> b -> c

and :: forall a b r. LogicalMatcher a b r => a -> b -> r

bind :: forall a g f. f -> a -> g

cons :: forall a b r. ConsGen a b r => a -> b -> r

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

diff' :: forall changed model. Diff changed model => changed -> (model -> model)

div :: forall a b c r. Arith a b c r => a -> b -> c

dot :: forall p g f. Dottable p g f => p -> g -> f

fold :: forall stepper a fold. Fold stepper a fold => stepper -> a -> fold

from :: forall f q fields sql. ToFrom f q fields => Resume q (From f fields E) sql => f -> q -> sql

FROM accepts the following sources

• Tables
• Inner and outer joins
• Aliased tables
• Aliased SELECT statements

Due to how SQL binding works, joins and subqueries require brackets to be parsed correctly. For example:

• SELECT column FROM (SELECT column FROM table) AS alias should be select column # from (select column # from table # as alias))
• SELECT column FROM table alias JOIN other_table other_alias should be select column # from ((table # as alias)join(other_table # as other_alias)))

To aid composition, SELECT projections are only validated on FROM

groupBy :: forall f s q sql grouped columns. ToGroupBy q s columns => GroupedColumns f columns grouped => ValidGroupByProjection s grouped => Resume q (GroupBy f E) sql => f -> q -> sql

GROUP BY statement

hmap :: forall f a b. HMap f a b => f -> a -> b

hmapWithIndex :: forall f a b. HMapWithIndex f a b => f -> a -> b

investigate :: forall b a. Warn "Debug.Trace usage" => Show a => a -> b -> b

Once in a while, we all need to debug. A lot of programmers from imperative languages find real trouble with debugging, as they can't just bung in a console.log to see values. Well, what if I told you... you can! So, we can cheat a little bit, and use some escape hatches in the Debug package, including traceShow, which will log anything Showable. With this function, we can show a value at any point, and return anything!

mapping :: forall f a b. Mapping f a b => f -> a -> b

mod_ :: forall a b c r. Arith a b c r => a -> b -> c

mul :: forall a b c r. Arith a b c r => a -> b -> c

new1 :: forall b a1 o. o -> a1 -> b

oneShotChange :: forall tau p au. OneShotChange tau p au => tau -> p -> au

or :: forall a b r. LogicalMatcher a b r => a -> b -> r

orderBy :: forall f q sql. ToOrderBy f q => Resume q (OrderBy f E) sql => f -> q -> sql

ORDER BY statement

perform :: forall a o op. SymbioteOperation a o op => op -> a -> o

pow :: forall a b c r. Arith a b c r => a -> b -> c

property :: forall c b a. a -> b -> c

provide :: forall result a. a -> (Ask a => result) -> result

Provide an implicit parameter to a computation which requires it

queryReturnsImpl :: forall schema query returns. QueryReturns schema query returns => schema -> query -> returns

Do not use this. Use queryReturns instead. Only exported due to compiler restrictions

resume :: forall a b c. Resume a b c => a -> b -> c

returning :: forall f q sql. ToReturning f q => Resume q (Returning f) sql => f -> q -> sql

rotate :: forall input tail output. ArgsRotater input tail output => input -> tail -> output

scoped :: forall f output mod. Scoped f output => mod -> f -> output

sub :: forall a b c r. Arith a b c r => a -> b -> c

transform :: forall function return constructor. EtaConversionTransformer function return constructor => constructor -> function -> return

transformFlipped :: forall function return constructor. EtaConversionTransformer function return constructor => function -> constructor -> return

transformWith :: forall function return constructor. WithInputEtaConversionTransformer function return constructor => constructor -> function -> return

transformWithFlipped :: forall function return constructor. WithInputEtaConversionTransformer function return constructor => function -> constructor -> return

tupleRev :: forall t1 acc t2. TupleRev t1 acc t2 => t1 -> acc -> t2

unionObject :: forall from to. ObjectUnion from to => from -> to -> to

unsafeAdd :: forall a b c. a -> b -> c

unsafeDiv :: forall a b c. a -> b -> c

unsafeMod :: forall a b c. a -> b -> c

unsafeMul :: forall a b c. a -> b -> c

unsafePow :: forall a b c. a -> b -> c

unsafeSub :: forall a b c. a -> b -> c

unsafeWithChildren :: forall c p. c -> p -> p

unsafeWithChildren :: forall c p. c -> p -> p

wher :: forall c q sql. ToWhere c q => Resume q (Where c E) sql => c -> q -> sql

WHERE statement

pure :: forall f a. Applicative f => a -> f a

singleton :: forall f a. Unfoldable1 f => a -> f a

Contain a single value. For example:

singleton "foo" == (NEL.singleton "foo" :: NEL.NonEmptyList String)

downFrom :: forall a u. Enum a => Unfoldable u => a -> u a

Produces all predecessors of an Enum value, excluding the start value.

downFromIncluding :: forall a u. Enum a => Unfoldable1 u => a -> u a

Produces all predecessors of an Enum value, including the start value.

downFromIncluding top will return all values in an Enum, in reverse order.

upFrom :: forall a u. Enum a => Unfoldable u => a -> u a

Produces all successors of an Enum value, excluding the start value.

upFromIncluding :: forall a u. Enum a => Unfoldable1 u => a -> u a

Produces all successors of an Enum value, including the start value.

upFromIncluding bottom will return all values in an Enum.

lambek :: forall t f. Recursive t f => Corecursive t f => t -> f t

project :: forall t f. Recursive t f => t -> f t

pure :: forall v f c. HasPure c f => ObjectOf c v => v -> f v

bottom1_ :: forall f a. Bottom1_ f => a -> f a

top1_ :: forall f a. Top1_ f => a -> f a

dsingleton :: forall cnt a. Diff cnt => a -> cnt a

pure :: forall d a. Syntax d => Eq a => a -> d a

pure :: forall f a. Unital Function Unit Unit f => Functor f => a -> f a