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A Simple Implementation of Lazy Type

A Simple Implementation of Lazy Type.

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type Lazy<'T> = 
  | Lazy of 'T ref
  static member RefValue(Lazy a) = a
  member l.Force() = (Lazy.RefValue l) |> (!)

let lazyValue = Lazy (ref 10)

let res = lazyValue.Force()
Multiple items
active recognizer Lazy: Lazy<'T> -> 'T

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.( |Lazy| )

--------------------
type Lazy<'T> = System.Lazy<'T>

Full name: Microsoft.FSharp.Control.Lazy<_>
Multiple items
union case Lazy.Lazy: 'T ref -> Lazy<'T>

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active recognizer Lazy: Lazy<'T> -> 'T

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.( |Lazy| )

--------------------
type Lazy<'T> =
  | Lazy of 'T ref
  member Force : unit -> 'T
  static member RefValue : Lazy<'a> -> 'a ref

Full name: Script.Lazy<_>
Multiple items
val ref : value:'T -> 'T ref

Full name: Microsoft.FSharp.Core.Operators.ref

--------------------
type 'T ref = Ref<'T>

Full name: Microsoft.FSharp.Core.ref<_>
static member Lazy.RefValue : Lazy<'a> -> 'a ref

Full name: Script.Lazy`1.RefValue
Multiple items
union case Lazy.Lazy: 'T ref -> Lazy<'T>

--------------------
type Lazy<'T> =
  | Lazy of 'T ref
  member Force : unit -> 'T
  static member RefValue : Lazy<'a> -> 'a ref

Full name: Script.Lazy<_>
val a : 'a ref
val l : Lazy<'T>
member Lazy.Force : unit -> 'T

Full name: Script.Lazy`1.Force
static member Lazy.RefValue : Lazy<'a> -> 'a ref
val lazyValue : Lazy<int>

Full name: Script.lazyValue
val res : int

Full name: Script.res
member Lazy.Force : unit -> 'T
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More information

Link:http://fssnip.net/e5
Posted:12 years ago
Author:Joel Huang
Tags: lazy

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