Package option defines the Either datastructure and its monadic operations
package either implements the Either monad
A data type that can be of either of two types but not both. This is typically used to carry an error or a return value
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AltMonoid is the alternative [Monoid] for an Either
AltSemigroup is the alternative [Semigroup] for an Either
AlternativeMonoid is the alternative [Monoid] for an Either
func ApS[E, S1, S2, T any]( setter func(T) func(S1) S2, fa Either[E, T], ) func(Either[E, S1]) Either[E, S2]
ApS attaches a value to a context [S1] to produce a context [S2] by considering the context and the value concurrently
ApplicativeMonoid returns a [Monoid] that concatenates Either instances via their applicative
func BiMap[E1, E2, A, B any](f func(E1) E2, g func(a A) B) func(Either[E1, A]) Either[E2, B]
BiMap maps a pair of functions over the two type arguments of the bifunctor.
func Bind[E, S1, S2, T any]( setter func(T) func(S1) S2, f func(S1) Either[E, T], ) func(Either[E, S1]) Either[E, S2]
Bind attaches the result of a computation to a context [S1] to produce a context [S2]
func BindTo[E, S1, T any]( setter func(T) S1, ) func(Either[E, T]) Either[E, S1]
BindTo initializes a new state [S1] from a value [T]
func CompactArray[E, A any](fa []Either[E, A]) []A
CompactArray discards the none values and keeps the right values
func CompactArrayG[A1 ~[]Either[E, A], A2 ~[]A, E, A any](fa A1) A2
CompactArrayG discards the none values and keeps the right values
CompactRecord discards all none values and keeps the somes
CompactRecordG discards the noe values and keeps the some values
func Curry3[T1, T2, T3, R any](f func(T1, T2, T3) (R, error)) func(T1) func(T2) func(T3) Either[error, R]
func Curry4[T1, T2, T3, T4, R any](f func(T1, T2, T3, T4) (R, error)) func(T1) func(T2) func(T3) func(T4) Either[error, R]
Eitherize0 converts a function with 0 parameters returning a tuple into a function with 0 parameters returning an Either The inverse function is Uneitherize0
Eitherize1 converts a function with 1 parameters returning a tuple into a function with 1 parameters returning an Either The inverse function is Uneitherize1
func Eitherize10[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9) (R, error), T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9) Either[error, R]
Eitherize10 converts a function with 10 parameters returning a tuple into a function with 10 parameters returning an Either The inverse function is Uneitherize10
func Eitherize11[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) (R, error), T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) Either[error, R]
Eitherize11 converts a function with 11 parameters returning a tuple into a function with 11 parameters returning an Either The inverse function is Uneitherize11
func Eitherize12[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) (R, error), T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) Either[error, R]
Eitherize12 converts a function with 12 parameters returning a tuple into a function with 12 parameters returning an Either The inverse function is Uneitherize12
func Eitherize13[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) (R, error), T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) Either[error, R]
Eitherize13 converts a function with 13 parameters returning a tuple into a function with 13 parameters returning an Either The inverse function is Uneitherize13
func Eitherize14[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) (R, error), T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) Either[error, R]
Eitherize14 converts a function with 14 parameters returning a tuple into a function with 14 parameters returning an Either The inverse function is Uneitherize14
func Eitherize15[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) (R, error), T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) Either[error, R]
Eitherize15 converts a function with 15 parameters returning a tuple into a function with 15 parameters returning an Either The inverse function is Uneitherize15
Eitherize2 converts a function with 2 parameters returning a tuple into a function with 2 parameters returning an Either The inverse function is Uneitherize2
func Eitherize3[F ~func(T0, T1, T2) (R, error), T0, T1, T2, R any](f F) func(T0, T1, T2) Either[error, R]
Eitherize3 converts a function with 3 parameters returning a tuple into a function with 3 parameters returning an Either The inverse function is Uneitherize3
func Eitherize4[F ~func(T0, T1, T2, T3) (R, error), T0, T1, T2, T3, R any](f F) func(T0, T1, T2, T3) Either[error, R]
Eitherize4 converts a function with 4 parameters returning a tuple into a function with 4 parameters returning an Either The inverse function is Uneitherize4
func Eitherize5[F ~func(T0, T1, T2, T3, T4) (R, error), T0, T1, T2, T3, T4, R any](f F) func(T0, T1, T2, T3, T4) Either[error, R]
Eitherize5 converts a function with 5 parameters returning a tuple into a function with 5 parameters returning an Either The inverse function is Uneitherize5
func Eitherize6[F ~func(T0, T1, T2, T3, T4, T5) (R, error), T0, T1, T2, T3, T4, T5, R any](f F) func(T0, T1, T2, T3, T4, T5) Either[error, R]
Eitherize6 converts a function with 6 parameters returning a tuple into a function with 6 parameters returning an Either The inverse function is Uneitherize6
func Eitherize7[F ~func(T0, T1, T2, T3, T4, T5, T6) (R, error), T0, T1, T2, T3, T4, T5, T6, R any](f F) func(T0, T1, T2, T3, T4, T5, T6) Either[error, R]
Eitherize7 converts a function with 7 parameters returning a tuple into a function with 7 parameters returning an Either The inverse function is Uneitherize7
func Eitherize8[F ~func(T0, T1, T2, T3, T4, T5, T6, T7) (R, error), T0, T1, T2, T3, T4, T5, T6, T7, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7) Either[error, R]
Eitherize8 converts a function with 8 parameters returning a tuple into a function with 8 parameters returning an Either The inverse function is Uneitherize8
func Eitherize9[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8) (R, error), T0, T1, T2, T3, T4, T5, T6, T7, T8, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8) Either[error, R]
Eitherize9 converts a function with 9 parameters returning a tuple into a function with 9 parameters returning an Either The inverse function is Uneitherize9
Constructs an equal predicate for an `Either`
func Fold[E, A, B any](onLeft func(E) B, onRight func(A) B) func(Either[E, A]) B
func FromNillable[A, E any](e E) func(*A) Either[E, *A]
func FromPredicate[E, A any](pred func(A) bool, onFalse func(A) E) func(A) Either[E, A]
FromStrictEquals constructs an [EQ.Eq] from the canonical comparison function
Functor implements the functoric operations for Either
func GetOrElse[E, A any](onLeft func(E) A) func(Either[E, A]) A
IsLeft tests if the Either is a left value. Rather use Fold if you need to access the values. Inverse is IsRight.
IsLeft tests if the Either is a right value. Rather use Fold if you need to access the values. Inverse is IsLeft.
func Let[E, S1, S2, T any]( key func(T) func(S1) S2, f func(S1) T, ) func(Either[E, S1]) Either[E, S2]
Let attaches the result of a computation to a context [S1] to produce a context [S2]
func LetTo[E, S1, S2, T any]( key func(T) func(S1) S2, b T, ) func(Either[E, S1]) Either[E, S2]
LetTo attaches the a value to a context [S1] to produce a context [S2]
func MapLeft[A, E1, E2 any](f func(E1) E2) func(fa Either[E1, A]) Either[E2, A]
MapLeft applies a mapping function to the error channel
Monad implements the monadic operations for Either
func MonadFold[E, A, B any](ma Either[E, A], onLeft func(e E) B, onRight func(a A) B) B
MonadFold extracts the values from an Either by invoking the [onLeft] callback or the [onRight] callback depending on the case
Pointed implements the pointedic operations for Either
func Reduce[E, A, B any](f func(B, A) B, initial B) func(Either[E, A]) B
func Sequence[E, A, HKTA, HKTRA any]( mof func(Either[E, A]) HKTRA, mmap func(func(A) Either[E, A]) func(HKTA) HKTRA, ) func(Either[E, HKTA]) HKTRA
Sequence converts an Either of some higher kinded type into the higher kinded type of an Either
func Sequence3[E, T1, T2, T3, R any](f func(T1, T2, T3) Either[E, R]) func(Either[E, T1], Either[E, T2], Either[E, T3]) Either[E, R]
func Traverse[A, E, B, HKTB, HKTRB any]( mof func(Either[E, B]) HKTRB, mmap func(func(B) Either[E, B]) func(HKTB) HKTRB, ) func(func(A) HKTB) func(Either[E, A]) HKTRB
Traverse converts an Either of some higher kinded type into the higher kinded type of an Either
func TraverseArray[E, A, B any](f func(A) Either[E, B]) func([]A) Either[E, []B]
TraverseArray transforms an array
func TraverseArrayG[GA ~[]A, GB ~[]B, E, A, B any](f func(A) Either[E, B]) func(GA) Either[E, GB]
TraverseArrayG transforms an array
func TraverseArrayWithIndex[E, A, B any](f func(int, A) Either[E, B]) func([]A) Either[E, []B]
TraverseArrayWithIndex transforms an array
func TraverseArrayWithIndexG[GA ~[]A, GB ~[]B, E, A, B any](f func(int, A) Either[E, B]) func(GA) Either[E, GB]
TraverseArrayWithIndexG transforms an array
TraverseRecord transforms a record of eithers into an either of a record
TraverseRecordG transforms a record of options into an option of a record
TraverseRecordWithIndex transforms a record of eithers into an either of a record
func TraverseRecordWithIndexG[GA ~map[K]A, GB ~map[K]B, K comparable, E, A, B any](f func(K, A) Either[E, B]) func(GA) Either[E, GB]
TraverseRecordWithIndexG transforms a record of options into an option of a record
TraverseTuple1 converts a [Tuple1] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple1]].
func TraverseTuple10[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], F8 ~func(A8) Either[E, T8], F9 ~func(A9) Either[E, T9], F10 ~func(A10) Either[E, T10], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7, A8, T8, A9, T9, A10, T10 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7, f8 F8, f9 F9, f10 F10) func(T.Tuple10[A1, A2, A3, A4, A5, A6, A7, A8, A9, A10]) Either[E, T.Tuple10[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10]]
TraverseTuple10 converts a [Tuple10] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple10]].
func TraverseTuple11[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], F8 ~func(A8) Either[E, T8], F9 ~func(A9) Either[E, T9], F10 ~func(A10) Either[E, T10], F11 ~func(A11) Either[E, T11], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7, A8, T8, A9, T9, A10, T10, A11, T11 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7, f8 F8, f9 F9, f10 F10, f11 F11) func(T.Tuple11[A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11]) Either[E, T.Tuple11[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11]]
TraverseTuple11 converts a [Tuple11] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple11]].
func TraverseTuple12[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], F8 ~func(A8) Either[E, T8], F9 ~func(A9) Either[E, T9], F10 ~func(A10) Either[E, T10], F11 ~func(A11) Either[E, T11], F12 ~func(A12) Either[E, T12], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7, A8, T8, A9, T9, A10, T10, A11, T11, A12, T12 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7, f8 F8, f9 F9, f10 F10, f11 F11, f12 F12) func(T.Tuple12[A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12]) Either[E, T.Tuple12[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12]]
TraverseTuple12 converts a [Tuple12] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple12]].
func TraverseTuple13[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], F8 ~func(A8) Either[E, T8], F9 ~func(A9) Either[E, T9], F10 ~func(A10) Either[E, T10], F11 ~func(A11) Either[E, T11], F12 ~func(A12) Either[E, T12], F13 ~func(A13) Either[E, T13], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7, A8, T8, A9, T9, A10, T10, A11, T11, A12, T12, A13, T13 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7, f8 F8, f9 F9, f10 F10, f11 F11, f12 F12, f13 F13) func(T.Tuple13[A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13]) Either[E, T.Tuple13[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13]]
TraverseTuple13 converts a [Tuple13] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple13]].
func TraverseTuple14[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], F8 ~func(A8) Either[E, T8], F9 ~func(A9) Either[E, T9], F10 ~func(A10) Either[E, T10], F11 ~func(A11) Either[E, T11], F12 ~func(A12) Either[E, T12], F13 ~func(A13) Either[E, T13], F14 ~func(A14) Either[E, T14], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7, A8, T8, A9, T9, A10, T10, A11, T11, A12, T12, A13, T13, A14, T14 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7, f8 F8, f9 F9, f10 F10, f11 F11, f12 F12, f13 F13, f14 F14) func(T.Tuple14[A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14]) Either[E, T.Tuple14[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14]]
TraverseTuple14 converts a [Tuple14] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple14]].
func TraverseTuple15[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], F8 ~func(A8) Either[E, T8], F9 ~func(A9) Either[E, T9], F10 ~func(A10) Either[E, T10], F11 ~func(A11) Either[E, T11], F12 ~func(A12) Either[E, T12], F13 ~func(A13) Either[E, T13], F14 ~func(A14) Either[E, T14], F15 ~func(A15) Either[E, T15], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7, A8, T8, A9, T9, A10, T10, A11, T11, A12, T12, A13, T13, A14, T14, A15, T15 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7, f8 F8, f9 F9, f10 F10, f11 F11, f12 F12, f13 F13, f14 F14, f15 F15) func(T.Tuple15[A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15]) Either[E, T.Tuple15[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15]]
TraverseTuple15 converts a [Tuple15] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple15]].
func TraverseTuple2[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], E, A1, T1, A2, T2 any](f1 F1, f2 F2) func(T.Tuple2[A1, A2]) Either[E, T.Tuple2[T1, T2]]
TraverseTuple2 converts a [Tuple2] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple2]].
func TraverseTuple3[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], E, A1, T1, A2, T2, A3, T3 any](f1 F1, f2 F2, f3 F3) func(T.Tuple3[A1, A2, A3]) Either[E, T.Tuple3[T1, T2, T3]]
TraverseTuple3 converts a [Tuple3] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple3]].
func TraverseTuple4[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], E, A1, T1, A2, T2, A3, T3, A4, T4 any](f1 F1, f2 F2, f3 F3, f4 F4) func(T.Tuple4[A1, A2, A3, A4]) Either[E, T.Tuple4[T1, T2, T3, T4]]
TraverseTuple4 converts a [Tuple4] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple4]].
func TraverseTuple5[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5) func(T.Tuple5[A1, A2, A3, A4, A5]) Either[E, T.Tuple5[T1, T2, T3, T4, T5]]
TraverseTuple5 converts a [Tuple5] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple5]].
func TraverseTuple6[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6) func(T.Tuple6[A1, A2, A3, A4, A5, A6]) Either[E, T.Tuple6[T1, T2, T3, T4, T5, T6]]
TraverseTuple6 converts a [Tuple6] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple6]].
func TraverseTuple7[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7) func(T.Tuple7[A1, A2, A3, A4, A5, A6, A7]) Either[E, T.Tuple7[T1, T2, T3, T4, T5, T6, T7]]
TraverseTuple7 converts a [Tuple7] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple7]].
func TraverseTuple8[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], F8 ~func(A8) Either[E, T8], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7, A8, T8 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7, f8 F8) func(T.Tuple8[A1, A2, A3, A4, A5, A6, A7, A8]) Either[E, T.Tuple8[T1, T2, T3, T4, T5, T6, T7, T8]]
TraverseTuple8 converts a [Tuple8] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple8]].
func TraverseTuple9[F1 ~func(A1) Either[E, T1], F2 ~func(A2) Either[E, T2], F3 ~func(A3) Either[E, T3], F4 ~func(A4) Either[E, T4], F5 ~func(A5) Either[E, T5], F6 ~func(A6) Either[E, T6], F7 ~func(A7) Either[E, T7], F8 ~func(A8) Either[E, T8], F9 ~func(A9) Either[E, T9], E, A1, T1, A2, T2, A3, T3, A4, T4, A5, T5, A6, T6, A7, T7, A8, T8, A9, T9 any](f1 F1, f2 F2, f3 F3, f4 F4, f5 F5, f6 F6, f7 F7, f8 F8, f9 F9) func(T.Tuple9[A1, A2, A3, A4, A5, A6, A7, A8, A9]) Either[E, T.Tuple9[T1, T2, T3, T4, T5, T6, T7, T8, T9]]
TraverseTuple9 converts a [Tuple9] of [A] via transformation functions transforming [A] to [Either[E, A]] into a [Either[E, Tuple9]].
func Uncurry3[T1, T2, T3, R any](f func(T1) func(T2) func(T3) Either[error, R]) func(T1, T2, T3) (R, error)
func Uncurry4[T1, T2, T3, T4, R any](f func(T1) func(T2) func(T3) func(T4) Either[error, R]) func(T1, T2, T3, T4) (R, error)
Uneitherize0 converts a function with 0 parameters returning an Either into a function with 0 parameters returning a tuple The inverse function is Eitherize0
Uneitherize1 converts a function with 1 parameters returning an Either into a function with 1 parameters returning a tuple The inverse function is Eitherize1
func Uneitherize10[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9) Either[error, R], T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9) (R, error)
Uneitherize10 converts a function with 10 parameters returning an Either into a function with 10 parameters returning a tuple The inverse function is Eitherize10
func Uneitherize11[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) Either[error, R], T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) (R, error)
Uneitherize11 converts a function with 11 parameters returning an Either into a function with 11 parameters returning a tuple The inverse function is Eitherize11
func Uneitherize12[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) Either[error, R], T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) (R, error)
Uneitherize12 converts a function with 12 parameters returning an Either into a function with 12 parameters returning a tuple The inverse function is Eitherize12
func Uneitherize13[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) Either[error, R], T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) (R, error)
Uneitherize13 converts a function with 13 parameters returning an Either into a function with 13 parameters returning a tuple The inverse function is Eitherize13
func Uneitherize14[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) Either[error, R], T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) (R, error)
Uneitherize14 converts a function with 14 parameters returning an Either into a function with 14 parameters returning a tuple The inverse function is Eitherize14
func Uneitherize15[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) Either[error, R], T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) (R, error)
Uneitherize15 converts a function with 15 parameters returning an Either into a function with 15 parameters returning a tuple The inverse function is Eitherize15
func Uneitherize2[F ~func(T0, T1) Either[error, R], T0, T1, R any](f F) func(T0, T1) (R, error)
Uneitherize2 converts a function with 2 parameters returning an Either into a function with 2 parameters returning a tuple The inverse function is Eitherize2
func Uneitherize3[F ~func(T0, T1, T2) Either[error, R], T0, T1, T2, R any](f F) func(T0, T1, T2) (R, error)
Uneitherize3 converts a function with 3 parameters returning an Either into a function with 3 parameters returning a tuple The inverse function is Eitherize3
func Uneitherize4[F ~func(T0, T1, T2, T3) Either[error, R], T0, T1, T2, T3, R any](f F) func(T0, T1, T2, T3) (R, error)
Uneitherize4 converts a function with 4 parameters returning an Either into a function with 4 parameters returning a tuple The inverse function is Eitherize4
func Uneitherize5[F ~func(T0, T1, T2, T3, T4) Either[error, R], T0, T1, T2, T3, T4, R any](f F) func(T0, T1, T2, T3, T4) (R, error)
Uneitherize5 converts a function with 5 parameters returning an Either into a function with 5 parameters returning a tuple The inverse function is Eitherize5
func Uneitherize6[F ~func(T0, T1, T2, T3, T4, T5) Either[error, R], T0, T1, T2, T3, T4, T5, R any](f F) func(T0, T1, T2, T3, T4, T5) (R, error)
Uneitherize6 converts a function with 6 parameters returning an Either into a function with 6 parameters returning a tuple The inverse function is Eitherize6
func Uneitherize7[F ~func(T0, T1, T2, T3, T4, T5, T6) Either[error, R], T0, T1, T2, T3, T4, T5, T6, R any](f F) func(T0, T1, T2, T3, T4, T5, T6) (R, error)
Uneitherize7 converts a function with 7 parameters returning an Either into a function with 7 parameters returning a tuple The inverse function is Eitherize7
func Uneitherize8[F ~func(T0, T1, T2, T3, T4, T5, T6, T7) Either[error, R], T0, T1, T2, T3, T4, T5, T6, T7, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7) (R, error)
Uneitherize8 converts a function with 8 parameters returning an Either into a function with 8 parameters returning a tuple The inverse function is Eitherize8
func Uneitherize9[F ~func(T0, T1, T2, T3, T4, T5, T6, T7, T8) Either[error, R], T0, T1, T2, T3, T4, T5, T6, T7, T8, R any](f F) func(T0, T1, T2, T3, T4, T5, T6, T7, T8) (R, error)
Uneitherize9 converts a function with 9 parameters returning an Either into a function with 9 parameters returning a tuple The inverse function is Eitherize9
func Unvariadic2[T1, T2, V, R any](f func(T1, T2, ...V) (R, error)) func(T1, T2, []V) Either[error, R]
func Unvariadic3[T1, T2, T3, V, R any](f func(T1, T2, T3, ...V) (R, error)) func(T1, T2, T3, []V) Either[error, R]
func Unvariadic4[T1, T2, T3, T4, V, R any](f func(T1, T2, T3, T4, ...V) (R, error)) func(T1, T2, T3, T4, []V) Either[error, R]
func Unwrap[E, A any](ma Either[E, A]) (A, E)
Unwrap converts an Either into the idiomatic tuple
UnwrapError converts an Either into the idiomatic tuple
func Variadic2[T1, T2, V, R any](f func(T1, T2, []V) (R, error)) func(T1, T2, ...V) Either[error, R]
func Variadic3[T1, T2, T3, V, R any](f func(T1, T2, T3, []V) (R, error)) func(T1, T2, T3, ...V) Either[error, R]
func Variadic4[T1, T2, T3, T4, V, R any](f func(T1, T2, T3, T4, []V) (R, error)) func(T1, T2, T3, T4, ...V) Either[error, R]
constructs a function that creates a resource, then operates on it and then releases the resource
type Either[E, A any] either
Either defines a data structure that logically holds either an E or an A. The flag discriminates the cases
// Build an Either
leftValue := Left[string](fmt.Errorf("some error"))
rightValue := Right[error]("value")
// Build from a value
fromNillable := FromNillable[string](fmt.Errorf("value was nil"))
leftFromNil := fromNillable(nil)
value := "value"
rightFromPointer := fromNillable(&value)
// some predicate
isEven := func(num int) bool {
return num%2 == 0
}
fromEven := FromPredicate(isEven, errors.OnSome[int]("%d is an odd number"))
leftFromPred := fromEven(3)
rightFromPred := fromEven(4)
fmt.Println(leftValue)
fmt.Println(rightValue)
fmt.Println(leftFromNil)
fmt.Println(IsRight(rightFromPointer))
fmt.Println(leftFromPred)
fmt.Println(rightFromPred)
Output: Left[*errors.errorString](some error) Right[string](value) Left[*errors.errorString](value was nil) true Left[*errors.errorString](3 is an odd number) Right[int](4)
Bind creates an empty context of type [S] to be used with the Bind operation
Left creates a new instance of an Either representing the left value.
func MonadBiMap[E1, E2, A, B any](fa Either[E1, A], f func(E1) E2, g func(a A) B) Either[E2, B]
func MonadMapLeft[E1, A, E2 any](fa Either[E1, A], f func(E1) E2) Either[E2, A]
func MonadSequence2[E, T1, T2, R any](e1 Either[E, T1], e2 Either[E, T2], f func(T1, T2) Either[E, R]) Either[E, R]
func MonadSequence3[E, T1, T2, T3, R any](e1 Either[E, T1], e2 Either[E, T2], e3 Either[E, T3], f func(T1, T2, T3) Either[E, R]) Either[E, R]
Of is equivalent to Right
Right creates a new instance of an Either representing the right value.
SequenceArray converts a homogeneous sequence of either into an either of sequence
func SequenceArrayG[GA ~[]A, GOA ~[]Either[E, A], E, A any](ma GOA) Either[E, GA]
SequenceRecord converts a homogeneous sequence of either into an either of sequence
SequenceT1 converts 1 parameters of [Either[E, T]] into a [Either[E, Tuple1]].
func SequenceT10[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7], t8 Either[E, T8], t9 Either[E, T9], t10 Either[E, T10]) Either[E, T.Tuple10[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10]]
SequenceT10 converts 10 parameters of [Either[E, T]] into a [Either[E, Tuple10]].
func SequenceT11[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7], t8 Either[E, T8], t9 Either[E, T9], t10 Either[E, T10], t11 Either[E, T11]) Either[E, T.Tuple11[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11]]
SequenceT11 converts 11 parameters of [Either[E, T]] into a [Either[E, Tuple11]].
func SequenceT12[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7], t8 Either[E, T8], t9 Either[E, T9], t10 Either[E, T10], t11 Either[E, T11], t12 Either[E, T12]) Either[E, T.Tuple12[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12]]
SequenceT12 converts 12 parameters of [Either[E, T]] into a [Either[E, Tuple12]].
func SequenceT13[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7], t8 Either[E, T8], t9 Either[E, T9], t10 Either[E, T10], t11 Either[E, T11], t12 Either[E, T12], t13 Either[E, T13]) Either[E, T.Tuple13[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13]]
SequenceT13 converts 13 parameters of [Either[E, T]] into a [Either[E, Tuple13]].
func SequenceT14[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7], t8 Either[E, T8], t9 Either[E, T9], t10 Either[E, T10], t11 Either[E, T11], t12 Either[E, T12], t13 Either[E, T13], t14 Either[E, T14]) Either[E, T.Tuple14[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14]]
SequenceT14 converts 14 parameters of [Either[E, T]] into a [Either[E, Tuple14]].
func SequenceT15[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7], t8 Either[E, T8], t9 Either[E, T9], t10 Either[E, T10], t11 Either[E, T11], t12 Either[E, T12], t13 Either[E, T13], t14 Either[E, T14], t15 Either[E, T15]) Either[E, T.Tuple15[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15]]
SequenceT15 converts 15 parameters of [Either[E, T]] into a [Either[E, Tuple15]].
SequenceT2 converts 2 parameters of [Either[E, T]] into a [Either[E, Tuple2]].
func SequenceT3[E, T1, T2, T3 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3]) Either[E, T.Tuple3[T1, T2, T3]]
SequenceT3 converts 3 parameters of [Either[E, T]] into a [Either[E, Tuple3]].
func SequenceT4[E, T1, T2, T3, T4 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4]) Either[E, T.Tuple4[T1, T2, T3, T4]]
SequenceT4 converts 4 parameters of [Either[E, T]] into a [Either[E, Tuple4]].
func SequenceT5[E, T1, T2, T3, T4, T5 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5]) Either[E, T.Tuple5[T1, T2, T3, T4, T5]]
SequenceT5 converts 5 parameters of [Either[E, T]] into a [Either[E, Tuple5]].
func SequenceT6[E, T1, T2, T3, T4, T5, T6 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6]) Either[E, T.Tuple6[T1, T2, T3, T4, T5, T6]]
SequenceT6 converts 6 parameters of [Either[E, T]] into a [Either[E, Tuple6]].
func SequenceT7[E, T1, T2, T3, T4, T5, T6, T7 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7]) Either[E, T.Tuple7[T1, T2, T3, T4, T5, T6, T7]]
SequenceT7 converts 7 parameters of [Either[E, T]] into a [Either[E, Tuple7]].
func SequenceT8[E, T1, T2, T3, T4, T5, T6, T7, T8 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7], t8 Either[E, T8]) Either[E, T.Tuple8[T1, T2, T3, T4, T5, T6, T7, T8]]
SequenceT8 converts 8 parameters of [Either[E, T]] into a [Either[E, Tuple8]].
func SequenceT9[E, T1, T2, T3, T4, T5, T6, T7, T8, T9 any](t1 Either[E, T1], t2 Either[E, T2], t3 Either[E, T3], t4 Either[E, T4], t5 Either[E, T5], t6 Either[E, T6], t7 Either[E, T7], t8 Either[E, T8], t9 Either[E, T9]) Either[E, T.Tuple9[T1, T2, T3, T4, T5, T6, T7, T8, T9]]
SequenceT9 converts 9 parameters of [Either[E, T]] into a [Either[E, Tuple9]].
SequenceTuple1 converts a [Tuple1] of [Either[E, T]] into an [Either[E, Tuple1]].
func SequenceTuple10[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10 any](t T.Tuple10[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7], Either[E, T8], Either[E, T9], Either[E, T10]]) Either[E, T.Tuple10[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10]]
SequenceTuple10 converts a [Tuple10] of [Either[E, T]] into an [Either[E, Tuple10]].
func SequenceTuple11[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11 any](t T.Tuple11[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7], Either[E, T8], Either[E, T9], Either[E, T10], Either[E, T11]]) Either[E, T.Tuple11[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11]]
SequenceTuple11 converts a [Tuple11] of [Either[E, T]] into an [Either[E, Tuple11]].
func SequenceTuple12[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12 any](t T.Tuple12[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7], Either[E, T8], Either[E, T9], Either[E, T10], Either[E, T11], Either[E, T12]]) Either[E, T.Tuple12[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12]]
SequenceTuple12 converts a [Tuple12] of [Either[E, T]] into an [Either[E, Tuple12]].
func SequenceTuple13[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13 any](t T.Tuple13[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7], Either[E, T8], Either[E, T9], Either[E, T10], Either[E, T11], Either[E, T12], Either[E, T13]]) Either[E, T.Tuple13[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13]]
SequenceTuple13 converts a [Tuple13] of [Either[E, T]] into an [Either[E, Tuple13]].
func SequenceTuple14[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14 any](t T.Tuple14[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7], Either[E, T8], Either[E, T9], Either[E, T10], Either[E, T11], Either[E, T12], Either[E, T13], Either[E, T14]]) Either[E, T.Tuple14[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14]]
SequenceTuple14 converts a [Tuple14] of [Either[E, T]] into an [Either[E, Tuple14]].
func SequenceTuple15[E, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 any](t T.Tuple15[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7], Either[E, T8], Either[E, T9], Either[E, T10], Either[E, T11], Either[E, T12], Either[E, T13], Either[E, T14], Either[E, T15]]) Either[E, T.Tuple15[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15]]
SequenceTuple15 converts a [Tuple15] of [Either[E, T]] into an [Either[E, Tuple15]].
SequenceTuple2 converts a [Tuple2] of [Either[E, T]] into an [Either[E, Tuple2]].
func SequenceTuple3[E, T1, T2, T3 any](t T.Tuple3[Either[E, T1], Either[E, T2], Either[E, T3]]) Either[E, T.Tuple3[T1, T2, T3]]
SequenceTuple3 converts a [Tuple3] of [Either[E, T]] into an [Either[E, Tuple3]].
func SequenceTuple4[E, T1, T2, T3, T4 any](t T.Tuple4[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4]]) Either[E, T.Tuple4[T1, T2, T3, T4]]
SequenceTuple4 converts a [Tuple4] of [Either[E, T]] into an [Either[E, Tuple4]].
func SequenceTuple5[E, T1, T2, T3, T4, T5 any](t T.Tuple5[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5]]) Either[E, T.Tuple5[T1, T2, T3, T4, T5]]
SequenceTuple5 converts a [Tuple5] of [Either[E, T]] into an [Either[E, Tuple5]].
func SequenceTuple6[E, T1, T2, T3, T4, T5, T6 any](t T.Tuple6[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6]]) Either[E, T.Tuple6[T1, T2, T3, T4, T5, T6]]
SequenceTuple6 converts a [Tuple6] of [Either[E, T]] into an [Either[E, Tuple6]].
func SequenceTuple7[E, T1, T2, T3, T4, T5, T6, T7 any](t T.Tuple7[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7]]) Either[E, T.Tuple7[T1, T2, T3, T4, T5, T6, T7]]
SequenceTuple7 converts a [Tuple7] of [Either[E, T]] into an [Either[E, Tuple7]].
func SequenceTuple8[E, T1, T2, T3, T4, T5, T6, T7, T8 any](t T.Tuple8[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7], Either[E, T8]]) Either[E, T.Tuple8[T1, T2, T3, T4, T5, T6, T7, T8]]
SequenceTuple8 converts a [Tuple8] of [Either[E, T]] into an [Either[E, Tuple8]].
func SequenceTuple9[E, T1, T2, T3, T4, T5, T6, T7, T8, T9 any](t T.Tuple9[Either[E, T1], Either[E, T2], Either[E, T3], Either[E, T4], Either[E, T5], Either[E, T6], Either[E, T7], Either[E, T8], Either[E, T9]]) Either[E, T.Tuple9[T1, T2, T3, T4, T5, T6, T7, T8, T9]]
SequenceTuple9 converts a [Tuple9] of [Either[E, T]] into an [Either[E, Tuple9]].
Swap changes the order of type parameters
Format prints some debug info for the object
String prints some debug info for the object
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