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catMaybes :: forall a. Array (Maybe a) -> Array a

Filter an array of optional values, keeping only the elements which contain a value, creating a new array.

catMaybes [Nothing, Just 2, Nothing, Just 4] = [2, 4]

untilJust :: forall a m. MonadRec m => m (Maybe a) -> m a

Supplied computation will be executed repeatedly until it evaluates to Just value and then that value will be returned.

whileJust :: forall a m. Monoid a => MonadRec m => m (Maybe a) -> m a

While supplied computation evaluates to Just _, it will be executed repeatedly and results will be combined using monoid instance.

init :: forall a. Partial => Array a -> Array a

Get all but the last element of a non-empty array.

Running time: O(n), where n is the length of the array.

nub :: forall a. Ord a => Array a -> Array a

Remove the duplicates from an array, creating a new array.

nub [1, 2, 1, 3, 3] = [1, 2, 3]

nubEq :: forall a. Eq a => Array a -> Array a

Remove the duplicates from an array, creating a new array.

This less efficient version of nub only requires an Eq instance.

nubEq [1, 2, 1, 3, 3] = [1, 2, 3]

reverse :: forall a. Array a -> Array a

Reverse an array, creating a new array.

reverse [] = []
reverse [1, 2, 3] = [3, 2, 1]

sort :: forall a. Ord a => Array a -> Array a

Sort the elements of an array in increasing order, creating a new array. Sorting is stable: the order of equal elements is preserved.

sort [2, -3, 1] = [-3, 1, 2]

tail :: forall a. Partial => Array a -> Array a

Get all but the first element of a non-empty array.

Running time: O(n), where n is the length of the array.

filtered :: forall m a. MonadRec m => MonadGen m => m (Maybe a) -> m a

Creates a generator that repeatedly run another generator until it produces Just node. This will never halt if the input generator always produces Nothing.

compact :: forall f a. Compactable f => f (Maybe a) -> f a

compactDefault :: forall f a. Functor f => Compactable f => f (Maybe a) -> f a

nubHash :: forall a. Hashable a => Array a -> Array a

Remove duplicates from an array.

Like nub from Data.Array, but uses a Hashable constraint instead of an Ord constraint.

a_ :: forall html a. Html html => Array (html a) -> html a

Defines a hyperlink [No Attributes]

a_ :: forall html a. Html html => Array (html a) -> html a

Creates a hyperlink element [No Attributes]

abbr_ :: forall html a. Html html => Array (html a) -> html a

Defines an abbreviation [No Attributes]

address_ :: forall html a. Html html => Array (html a) -> html a

Defines contact information for the author/owner of a document [No Attributes]

altGlyph_ :: forall html a. Html html => Array (html a) -> html a

Defines an alternative representation of a glyph in a font [No Attributes]

altGlyphDef_ :: forall html a. Html html => Array (html a) -> html a

Defines a set of glyph substitutions for an altGlyph element [No Attributes]

altGlyphItem_ :: forall html a. Html html => Array (html a) -> html a

Defines a substitution for a specific glyph in an altGlyphDef element [No Attributes]

article_ :: forall html a. Html html => Array (html a) -> html a

Defines self-contained content, like blog posts or news articles [No Attributes]

aside_ :: forall html a. Html html => Array (html a) -> html a

Defines content aside from the content it is placed in [No Attributes]

audio_ :: forall html a. Html html => Array (html a) -> html a

Defines sound content, like music or other audio streams [No Attributes]

b_ :: forall html a. Html html => Array (html a) -> html a

Defines bold text [No Attributes]

bdi_ :: forall html a. Html html => Array (html a) -> html a

Defines text directionality for its children [No Attributes]

bdo_ :: forall html a. Html html => Array (html a) -> html a

Defines text directionality [No Attributes]

blockquote_ :: forall html a. Html html => Array (html a) -> html a

Defines a section that is quoted from another source [No Attributes]

body_ :: forall html a. Html html => Array (html a) -> html a

Defines the document's body [No Attributes]

button_ :: forall html a. Html html => Array (html a) -> html a

Defines a clickable button [No Attributes]

canvas_ :: forall html a. Html html => Array (html a) -> html a

Defines an area that can be used to draw graphics using JavaScript [No Attributes]

caption_ :: forall html a. Html html => Array (html a) -> html a

Defines a table caption [No Attributes]

cite_ :: forall html a. Html html => Array (html a) -> html a

Defines the title of a work [No Attributes]

clipPath_ :: forall html a. Html html => Array (html a) -> html a

Defines a clipping path for an SVG element [No Attributes]

code_ :: forall html a. Html html => Array (html a) -> html a

Defines a piece of computer code [No Attributes]

colgroup_ :: forall html a. Html html => Array (html a) -> html a

Defines attributes for a group of table columns [No Attributes]

colorProfile_ :: forall html a. Html html => Array (html a) -> html a

Defines a color profile for an SVG document [No Attributes]

data__ :: forall html a. Html html => Array (html a) -> html a

Defines machine-readable data [No Attributes]

datalist_ :: forall html a. Html html => Array (html a) -> html a

Defines a list of pre-defined options for input controls [No Attributes]

dd_ :: forall html a. Html html => Array (html a) -> html a

Defines a description/value of a term in a description list [No Attributes]

defs_ :: forall html a. Html html => Array (html a) -> html a

Defines a set of reusable SVG elements [No Attributes]

del_ :: forall html a. Html html => Array (html a) -> html a

Defines text that has been deleted from a document [No Attributes]

desc_ :: forall html a. Html html => Array (html a) -> html a

Defines a description of an SVG element [No Attributes]

details_ :: forall html a. Html html => Array (html a) -> html a

Defines additional details that the user can view or hide [No Attributes]

dfn_ :: forall html a. Html html => Array (html a) -> html a

Defines a definition term [No Attributes]

dialog_ :: forall html a. Html html => Array (html a) -> html a

Defines a dialog box or window [No Attributes]

div_ :: forall html a. Html html => Array (html a) -> html a

Defines a section of a document [No Attributes]

dl_ :: forall html a. Html html => Array (html a) -> html a

Defines a description list [No Attributes]

dt_ :: forall html a. Html html => Array (html a) -> html a

Defines a term in a description list [No Attributes]

em_ :: forall html a. Html html => Array (html a) -> html a

Defines emphasized text [No Attributes]

feMerge_ :: forall html a. Html html => Array (html a) -> html a

Merges multiple input images together [No Attributes]

fieldset_ :: forall html a. Html html => Array (html a) -> html a

Groups related form elements [No Attributes]

figcaption_ :: forall html a. Html html => Array (html a) -> html a

Defines a caption for a <figure> element [No Attributes]

figure_ :: forall html a. Html html => Array (html a) -> html a

Defines self-contained content, like images or diagrams [No Attributes]

filter_ :: forall html a. Html html => Array (html a) -> html a

Defines a filter effect [No Attributes]

footer_ :: forall html a. Html html => Array (html a) -> html a

Defines a footer for a document or section [No Attributes]

foreignObject_ :: forall html a. Html html => Array (html a) -> html a

Inserts a foreign object into an SVG document [No Attributes]

form_ :: forall html a. Html html => Array (html a) -> html a

Defines an HTML form for user input [No Attributes]

g_ :: forall html a. Html html => Array (html a) -> html a

Creates a group of SVG elements [No Attributes]

glyph_ :: forall html a. Html html => Array (html a) -> html a

Defines a single glyph in an SVG font [No Attributes]

h1_ :: forall html a. Html html => Array (html a) -> html a

Defines a heading level 1 [No Attributes]

h2_ :: forall html a. Html html => Array (html a) -> html a

Defines a heading level 2 [No Attributes]

h3_ :: forall html a. Html html => Array (html a) -> html a

Defines a heading level 3 [No Attributes]

h4_ :: forall html a. Html html => Array (html a) -> html a

Defines a heading level 4 [No Attributes]

h5_ :: forall html a. Html html => Array (html a) -> html a

Defines a heading level 5 [No Attributes]

h6_ :: forall html a. Html html => Array (html a) -> html a

Defines a heading level 6 [No Attributes]

hatch_ :: forall html a. Html html => Array (html a) -> html a

Defines a hatching pattern [No Attributes]

head_ :: forall html a. Html html => Array (html a) -> html a

Defines information about the document [No Attributes]

header_ :: forall html a. Html html => Array (html a) -> html a

Defines a header for a document or section [No Attributes]

html_ :: forall html a. Html html => Array (html a) -> html a

Defines the root of an HTML document [No Attributes]

i_ :: forall html a. Html html => Array (html a) -> html a

Defines italic text [No Attributes]

iframe_ :: forall html a. Html html => Array (html a) -> html a

Defines an inline frame for embedding external content [No Attributes]

ins_ :: forall html a. Html html => Array (html a) -> html a

Defines text that has been inserted into a document [No Attributes]

kbd_ :: forall html a. Html html => Array (html a) -> html a

Defines keyboard input [No Attributes]

label_ :: forall html a. Html html => Array (html a) -> html a

Defines a label for an <input> element [No Attributes]

legend_ :: forall html a. Html html => Array (html a) -> html a

Defines a caption for a <fieldset> element [No Attributes]

li_ :: forall html a. Html html => Array (html a) -> html a

Defines a list item [No Attributes]

linearGradient_ :: forall html a. Html html => Array (html a) -> html a

Defines a linear gradient for an SVG element [No Attributes]

main_ :: forall html a. Html html => Array (html a) -> html a

Defines the main content of a document [No Attributes]

map_ :: forall html a. Html html => Array (html a) -> html a

Defines an image map [No Attributes]

mark_ :: forall html a. Html html => Array (html a) -> html a

Defines marked/highlighted text [No Attributes]

marker_ :: forall html a. Html html => Array (html a) -> html a

Defines a marker symbol to be used with a shape or line [No Attributes]

mask_ :: forall html a. Html html => Array (html a) -> html a

Defines a mask for an SVG element [No Attributes]

menu_ :: forall html a. Html html => Array (html a) -> html a

Defines a list/menu of commands [No Attributes]

meter_ :: forall html a. Html html => Array (html a) -> html a

Defines a scalar measurement within a known range [No Attributes]

mpath_ :: forall html a. Html html => Array (html a) -> html a

The mpath element provides a way to animate the motion of an object along a path. [No Attributes]

nav_ :: forall html a. Html html => Array (html a) -> html a

Defines a navigation menu [No Attributes]

noscript_ :: forall html a. Html html => Array (html a) -> html a

Defines an alternate content for users that do not support client-side scripts [No Attributes]

object_ :: forall html a. Html html => Array (html a) -> html a

Defines a container for external application or interactive content [No Attributes]

ol_ :: forall html a. Html html => Array (html a) -> html a

Defines an ordered list [No Attributes]

optgroup_ :: forall html a. Html html => Array (html a) -> html a

Defines a group of related options in a drop-down list [No Attributes]

option_ :: forall html a. Html html => Array (html a) -> html a

Defines an option in a drop-down list [No Attributes]

output_ :: forall html a. Html html => Array (html a) -> html a

Defines the result of a calculation [No Attributes]

p_ :: forall html a. Html html => Array (html a) -> html a

Defines a paragraph [No Attributes]

pattern_ :: forall html a. Html html => Array (html a) -> html a

The pattern element defines a repeating pattern to be used as a fill or stroke. [No Attributes]

picture_ :: forall html a. Html html => Array (html a) -> html a

Defines a container for multiple image resources [No Attributes]

pre_ :: forall html a. Html html => Array (html a) -> html a

Defines preformatted text [No Attributes]

progress_ :: forall html a. Html html => Array (html a) -> html a

Represents the progress of a task [No Attributes]

q_ :: forall html a. Html html => Array (html a) -> html a

Defines a short quotation [No Attributes]

radialGradient_ :: forall html a. Html html => Array (html a) -> html a

The radialGradient element defines a radial gradient to be used as a fill or stroke. [No Attributes]

rb_ :: forall html a. Html html => Array (html a) -> html a

Defines a ruby base (character) for a ruby annotation [No Attributes]

rp_ :: forall html a. Html html => Array (html a) -> html a

Defines what to show in browsers that do not support ruby annotations [No Attributes]

rt_ :: forall html a. Html html => Array (html a) -> html a

Defines a ruby text (annotation) for a ruby annotation [No Attributes]

rtc_ :: forall html a. Html html => Array (html a) -> html a

Defines a ruby text container for a ruby annotation [No Attributes]

ruby_ :: forall html a. Html html => Array (html a) -> html a

Defines a ruby annotation (for East Asian typography) [No Attributes]

s_ :: forall html a. Html html => Array (html a) -> html a

Defines strikethrough text [No Attributes]

samp_ :: forall html a. Html html => Array (html a) -> html a

Defines sample output from a computer program [No Attributes]

script_ :: forall html a. Html html => Array (html a) -> html a

The script element contains script statements. [No Attributes]

section_ :: forall html a. Html html => Array (html a) -> html a

Defines a section in a document [No Attributes]

select_ :: forall html a. Html html => Array (html a) -> html a

Defines a drop-down list [No Attributes]

slot_ :: forall html a. Html html => Array (html a) -> html a

Defines a slot for content in a web component [No Attributes]

small_ :: forall html a. Html html => Array (html a) -> html a

Defines smaller text [No Attributes]

span_ :: forall html a. Html html => Array (html a) -> html a

Defines a small section of text [No Attributes]

strong_ :: forall html a. Html html => Array (html a) -> html a

Defines important text [No Attributes]

style_ :: forall html a. Html html => Array (html a) -> html a

Defines style information for a document [No Attributes]

style_ :: forall html a. Html html => Array (html a) -> html a

The style element contains style information for a document or part of a document. [No Attributes]

sub_ :: forall html a. Html html => Array (html a) -> html a

Defines subscripted text [No Attributes]

summary_ :: forall html a. Html html => Array (html a) -> html a

Defines a visible heading for a <details> element [No Attributes]

sup_ :: forall html a. Html html => Array (html a) -> html a

Defines superscripted text [No Attributes]

svg_ :: forall html a. Html html => Array (html a) -> html a

The svg element is the root element of an SVG document. [No Attributes]

switch_ :: forall html a. Html html => Array (html a) -> html a

The switch element allows conditional processing of SVG elements. [No Attributes]

symbol_ :: forall html a. Html html => Array (html a) -> html a

The symbol element defines a reusable graphic element. [No Attributes]

table_ :: forall html a. Html html => Array (html a) -> html a

Defines a table [No Attributes]

tbody_ :: forall html a. Html html => Array (html a) -> html a

Groups the body content in a table [No Attributes]

td_ :: forall html a. Html html => Array (html a) -> html a

Defines a cell in a table [No Attributes]

template_ :: forall html a. Html html => Array (html a) -> html a

Defines a container for content that should be hidden when the page loads [No Attributes]

text_ :: forall html a. Html html => Array (html a) -> html a

The text element defines a block of text to be drawn. [No Attributes]

textarea_ :: forall html a. Html html => Array (html a) -> html a

Defines a multiline input control [No Attributes]

textPath_ :: forall html a. Html html => Array (html a) -> html a

The textPath element provides a way to align text along a path. [No Attributes]

tfoot_ :: forall html a. Html html => Array (html a) -> html a

Groups the footer content in a table [No Attributes]

th_ :: forall html a. Html html => Array (html a) -> html a

Defines a header cell in a table [No Attributes]

thead_ :: forall html a. Html html => Array (html a) -> html a

Groups the header content in a table [No Attributes]

time_ :: forall html a. Html html => Array (html a) -> html a

Defines a date/time [No Attributes]

title_ :: forall html a. Html html => Array (html a) -> html a

Defines a title for the document [No Attributes]

title_ :: forall html a. Html html => Array (html a) -> html a

The title element provides a title for a document or part of a document. [No Attributes]

tr_ :: forall html a. Html html => Array (html a) -> html a

Defines a row in a table [No Attributes]

tspan_ :: forall html a. Html html => Array (html a) -> html a

The tspan element provides a way to group a portion of text within a larger block of text. [No Attributes]

u_ :: forall html a. Html html => Array (html a) -> html a

Defines underlined text [No Attributes]

ul_ :: forall html a. Html html => Array (html a) -> html a

Defines an unordered list [No Attributes]

use_ :: forall html a. Html html => Array (html a) -> html a

The use element provides a way to reuse a single element and apply transformations to it. [No Attributes]

var_ :: forall html a. Html html => Array (html a) -> html a

Defines a variable [No Attributes]

video_ :: forall html a. Html html => Array (html a) -> html a

Defines a video [No Attributes]

view_ :: forall html a. Html html => Array (html a) -> html a

The view element defines a rectangular portion of the SVG canvas that should be displayed. [No Attributes]

defaultOrr :: forall a m. Plus m => Array (m a) -> m a

orr :: forall m a. MultiAlternative m => Array (m a) -> m a

untilJust :: forall m a. Monad m => m (Maybe a) -> m a

Run the supplied Maybe computation repeatedly until it returns a value. Returns that value.

untilJust :: forall m a. MonadRec m => m (Maybe a) -> m a

Run the supplied "Maybe" computation repeatedly until it returns a value. Returns that value.

createFragmentNode :: forall html message. Array (html message) -> html message

extent :: forall m. Magnitude m => Array m -> Array m

getOutgoingTransactions :: forall a. Directional a => Array a -> Array a

initMonoid :: forall m. Monoid m => Array m -> Array m

lower :: forall a f. Rebuildable f => f (Maybe a) -> f a

nonNull :: forall a t. GraphQLType (t (Maybe a)) => t (Maybe a) -> t a

This function transforms any nullable type into a non-nullable type Doing so also influences the types accepted root value

nonNullableString :: ScalarType String
nonNullableString = nonNull string

Equivalent to JavaScript's new GraphQLNonNull(...)

ordNub :: forall a. Ord a => Array a -> Array a

untilSuccessful :: forall a m. Monad m => m (Maybe a) -> m a

join :: forall a m. Bind m => m (m a) -> m a

Collapse two applications of a monadic type constructor into one.

oneOf :: forall f g a. Foldable f => Plus g => f (g a) -> g a

Combines a collection of elements using the Alt operation.

singleton :: forall a. a -> Array a

Create an array of one element

singleton 2 = [2]

oneOf :: forall m f a. MonadGen m => Foldable1 f => f (m a) -> m a

Creates a generator that outputs a value chosen from a selection of existing generators with uniform probability.

parOneOf :: forall a t m f. Parallel f m => Alternative f => Foldable t => Functor t => t (m a) -> m a

Race a collection in parallel.

wrapFree :: forall f m a. MonadFree f m => f (m a) -> m a

concat :: forall buf m. MutableBuffer buf m => Array buf -> m buf

Concatenates a list of buffers.

integrateM :: forall a stM m base. Applicative base => MonadBaseControl base m stM => m (stM a) -> m a

Pack a state belonging to m back into it, instead of throwing it away

restoreM :: forall base m stM a. MonadBaseControl base m stM => base (stM a) -> m a

keepLatest :: forall event a. IsEvent event => event (event a) -> event a

divisors :: forall a. Semiring a => EuclideanRing a => Eq a => Ord a => a -> Array a

All the divisors of a positive integer

from :: forall a t. a -> Array t

Given a pseudoarray, turns it into a proper array

keepLatest :: forall event a. IsEvent event => event (event a) -> event a

join :: forall v m c. HasBind c m => HasIdentity c => ObjectOf c (m v) => m (m v) -> m v

toArrayOf :: forall s t a b @sym lenses. IsSymbol sym => ParseSymbol sym lenses => ConstructBarlow lenses (Forget (Endo Function (List a))) s t a b => s -> Array a

choice :: forall a g f. Foldable f => Alt g => Plus g => f (g a) -> g a

flatten :: forall b a. HasChain a => a (a b) -> a b

Removes a level of nesting from a container.

flatten [[1, 2], [3, 4]] -- [1, 2, 3, 4]

oneOf :: forall a m f. Foldable f => Alternative m => f (m a) -> m a

toArray :: forall a b. HasToArray a b => a -> Array b

warbler :: forall m a. Bind m => m (m a) -> m a

W combinator - warbler - omega

MM

Λ a b . (a → a → b) → a → b

λ f x . f x x

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

forever :: forall m a b. MonadRec m => m a -> m b

forever runs an action indefinitely, using the MonadRec instance to ensure constant stack usage.

For example:

main = forever $ trace "Hello, World!"

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

Contain a single value. For example:

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

proof :: forall a b p. TypeEquals a b => p a -> p b

fold :: forall m. Monoid m => Array m -> m

head :: forall a. Partial => Array a -> a

Get the first element of a non-empty array.

Running time: O(1).

last :: forall a. Partial => Array a -> a

Get the last element of a non-empty array.

Running time: O(1).

elements :: forall m f a. MonadGen m => Foldable1 f => f a -> m a

Creates a generator that outputs a value chosen from a selection with uniform probability.

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.

coerce :: forall f a b. Contravariant f => Functor f => f a -> f b

throwError :: forall e m a. MonadThrow e m => e -> m a

inj :: forall f g a. Inject f g => f a -> g a

join :: forall f m a. MonadFork f m => f a -> m a

uninterruptible :: forall e f m a. MonadBracket e f m => m a -> m a

cleared :: forall f a b. Filterable f => f a -> f b

Filter out all values.

liftBase :: forall b m a. MonadBase b m => b a -> m a

length :: forall sproxy proxy a b. Length a b => sproxy a -> proxy b

parseInt :: forall sproxy proxy sym a. ParseInt sym a => sproxy sym -> proxy a

parse Int a Value-Level

parseInt (Proxy  :: _ "-1337") ~> N1337
parseInt (SProxy :: _ "-1337") ~> N1337
    -- N1137 would be type alias for Neg (Succ^1337 Z)

parseNat :: forall sproxy proxy sym a. ParseNat sym a => sproxy sym -> proxy a

value-level parse of number

parseNat (Proxy  "10") ~> D10
parseNat (SProxy "10") ~> D10

folded :: forall event a. IsEvent event => Monoid a => event a -> event a

Combine subsequent events using a Monoid.

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

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

folded :: forall a event. IsEvent event => Monoid a => event a -> event a

Combine subsequent events using a Monoid.