Data.Refined.Predicate

class Predicate p x  where

Members

• validate :: p -> x -> Either (RefinedError x) x

Instances

• Predicate IdPred x
• (Predicate l x, Predicate r x) => Predicate (And l r) x
• (Predicate l x, Predicate r x) => Predicate (Or l r) x
• (Predicate a x, Foldable t, Nat n) => Predicate (SizeEqualTo n) (t a)
• (Predicate a x, Foldable t, Nat n) => Predicate (SizeGreaterThan n) (t a)
• (Predicate a x, Foldable t, Nat n) => Predicate (SizeLessThan n) (t a)
• (Predicate a x) => Predicate (Not a) x
• (Nat n, Ord x, Ring x) => Predicate (LessThan n) x
• (Nat n, Ord x, Ring x) => Predicate (GreaterThan n) x
• (Nat n, Ord x, Ring x) => Predicate (From n) x
• (Nat n, Ord x, Ring x) => Predicate (To n) x
• (Nat n, Nat m, Ord x, Ring x) => Predicate (FromTo m n) x
• (Nat n, Eq x, Ring x) => Predicate (EqualTo n) x
• (Nat n, Eq x, Ring x) => Predicate (NotEqualTo n) x

data IdPred

A 'Predicate' for which everything is valid

Instances

• Predicate IdPred x

data And l r

A 'Predicate' ensuring that both given Predicates are valid

Instances

• (Predicate l x, Predicate r x) => Predicate (And l r) x

data Or l r

A 'Predicate' ensuring that one of two given Predicates is valid

Instances

• (Predicate l x, Predicate r x) => Predicate (Or l r) x

data SizeEqualTo a

A 'Predicate' ensuring that the length of a foldable is equal to a given int

Instances

• (Predicate a x, Foldable t, Nat n) => Predicate (SizeEqualTo n) (t a)

data SizeGreaterThan a

A 'Predicate' ensuring that the length of a foldable is greater than a given int

Instances

• (Predicate a x, Foldable t, Nat n) => Predicate (SizeGreaterThan n) (t a)

data SizeLessThan a

A 'Predicate' ensuring that the length of a foldable is less than a given int

Instances

• (Predicate a x, Foldable t, Nat n) => Predicate (SizeLessThan n) (t a)

data Not a

A 'Predicate' ensuring that the opposite of another Predicate passes

Instances

• (Predicate a x) => Predicate (Not a) x

data LessThan n

A 'Predicate' ensuring that the value is less than a given int

Instances

• (Nat n, Ord x, Ring x) => Predicate (LessThan n) x

data GreaterThan n

A 'Predicate' ensuring that the value is greater than a given int

Instances

• (Nat n, Ord x, Ring x) => Predicate (GreaterThan n) x

data From n

A 'Predicate' ensuring that the value is equal to or greater than a given int

Instances

• (Nat n, Ord x, Ring x) => Predicate (From n) x

data To n

A 'Predicate' ensuring that the value is up and including a given int

Instances

• (Nat n, Ord x, Ring x) => Predicate (To n) x

data FromTo m n

A 'Predicate' ensuring that the value is between two given ints (inclusive)

Instances

• (Nat n, Nat m, Ord x, Ring x) => Predicate (FromTo m n) x

data EqualTo n

A 'Predicate' ensuring that the value is equal to a given int

Instances

• (Nat n, Eq x, Ring x) => Predicate (EqualTo n) x

data NotEqualTo n

A 'Predicate' ensuring that the value is not equal to a given int

Instances

• (Nat n, Eq x, Ring x) => Predicate (NotEqualTo n) x

type Positive = GreaterThan D0

A 'Predicate' ensuring that the value is greater than zero.

type NonPositive = To D0

A 'Predicate' ensuring that the value is less than or equal to zero.

type Negative = LessThan D0

A 'Predicate' ensuring that the value is less than zero.

type NonNegative = From D0

A 'Predicate' ensuring that the value is greater than or equal to zero.

type ZeroToOne = FromTo D0 D1

An inclusive range of values from zero to one.

type NonZero = NotEqualTo D0

A 'Predicate' ensuring that the value is not equal to zero.

type NonEmpty = SizeGreaterThan D0

A 'Predicate' ensuring that the 'Foldable' is non-empty.