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IDisposable in a Type

This sample illustrates how to use an IDisposable inside an object, as well as a simple use of object expression

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open System

let getdisposable () = {new IDisposable with 
                           member x.Dispose() = printfn "I am disposed"}

type Atype () =
   let d = getdisposable ()
   interface IDisposable with
      member x.Dispose() = d.Dispose()

                        
let f ()= 
   use l = getdisposable ()
   printfn "hello"

f()//hello -> I am disposed


let f2 ()= 
   use a = new Atype()
   printfn "hello"

f2()//hello -> I am disposed
namespace System
val getdisposable : unit -> IDisposable

Full name: Script.getdisposable
type IDisposable =
  member Dispose : unit -> unit

Full name: System.IDisposable
val x : IDisposable
IDisposable.Dispose() : unit
val printfn : format:Printf.TextWriterFormat<'T> -> 'T

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.printfn
Multiple items
type Atype =
  interface IDisposable
  new : unit -> Atype

Full name: Script.Atype

--------------------
new : unit -> Atype
val d : IDisposable
val x : Atype
override Atype.Dispose : unit -> unit

Full name: Script.Atype.Dispose
val f : unit -> unit

Full name: Script.f
val l : IDisposable
val f2 : unit -> unit

Full name: Script.f2
val a : Atype
Raw view Test code New version

More information

Link:http://fssnip.net/dM
Posted:12 years ago
Author:nicolas2
Tags: idisposable , type

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