La Aplicación De IList<T> en F#
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22-12-2019 - |
Pregunta
He mirado por todas partes, de MODO y de internet, pero todavía no puede averiguar lo que me falta y cómo implementar genérico interfaz IList en F# para ese tipo:
type OrCondition() as self =
inherit Condition()
member val Conditions: List<Condition> = new List<Condition>() with get, set
interface IList<Condition> with
member this.Item
with get(index) = self.Conditions.[index]
and set(index)(value) = self.Conditions.[index] <- value
member this.IndexOf item = self.Conditions.IndexOf(item)
member this.Insert(index, item) = self.Conditions.Insert(index, item)
member this.RemoveAt(index) = self.Conditions.RemoveAt(index)
member this.Count with get() = self.Conditions.Count
member this.IsReadOnly with get() = false
member this.Add(item) = self.Conditions.Add(item)
member this.Clear() = self.Conditions.Clear()
member this.Contains(item) = self.Conditions.Contains(item)
member this.CopyTo(conditions, index) = self.Conditions.CopyTo(conditions, index)
member this.Remove(item) = self.Conditions.Remove(item)
member this.GetEnumerator() = (Seq.cast<Condition> self.Conditions).GetEnumerator()
Ahora compilador se queja de que no he implementado Colecciones.IEnumerable.GetEnumerator() y yo lo sé, pero yo realmente no sé cómo hacerlo.
Actualización: Resultado Final a continuación.Un gran agradecimiento para el Sr.Garland.También, vale la pena señalar que la tengo hace referencia sólo Sistema.Las colecciones.Genérico y se olvidó de Sistema de referencia.Colección cuando no genérica versión de IEnumerable residen.Tan triste ReSharper no apoyo F#.
open System.Collections
open System.Collections.Generic
type OrCondition() as self =
inherit Condition()
member val Conditions = new List<Condition>() with get, set
interface IList<Condition> with
member this.Item
with get(index) = self.Conditions.[index]
and set(index)(value) = self.Conditions.[index] <- value
member this.IndexOf item = self.Conditions.IndexOf(item)
member this.Insert(index, item) = self.Conditions.Insert(index, item)
member this.RemoveAt(index) = self.Conditions.RemoveAt(index)
member this.Count with get() = self.Conditions.Count
member this.IsReadOnly with get() = false
member this.Add(item) = self.Conditions.Add(item)
member this.Clear() = self.Conditions.Clear()
member this.Contains(item) = self.Conditions.Contains(item)
member this.CopyTo(conditions, index) = self.Conditions.CopyTo(conditions, index)
member this.Remove(item) = self.Conditions.Remove(item)
member this.GetEnumerator() = self.Conditions.GetEnumerator() :> IEnumerator<Condition>
member this.GetEnumerator() = self.Conditions.GetEnumerator() :> IEnumerator
Solución
Esto es debido a que IList
tiene dos GetEnumerator
métodos, uno para el IEnumerable<T>
interfaz y uno de los no-genérico IEnumerable
la interfaz.
Usted podría agregar a este miembro a implementar IEnumerable
member this.GetEnumerator() = (this.Conditions :> IEnumerable).GetEnumerator()
Otros consejos
La forma más sencilla es
interface System.Collections.IEnumerable with
member this.GetEnumerator() = this.Conditions.GetEnumerator() :> _