dependency injection in fsharp using servicecollection

di_ioc_fsharp_servicecollection.fsx

#r "nuget: Microsoft.Extensions.DependencyInjection"
#r "nuget: Microsoft.Extensions.Logging.Console"
open Microsoft.Extensions.DependencyInjection
open Microsoft.Extensions.Logging.Console
open Microsoft.Extensions.Logging

type ITest =
    abstract member Log : unit -> unit

type Test(logger: ILogger<Test>) =
    interface ITest with 
        member this.Log() = logger.LogInformation("cool!")

let services = new ServiceCollection()

services.AddLogging(fun l -> l.AddConsole(); ())
services.AddTransient<ITest,Test>()

let sp = services.BuildServiceProvider()

//ready to roll, get your service
let x = sp.GetRequiredService<ITest>()

// invoke and see your logs, 
// can run multiple times from repl, select this line, then: ALT + ENTER
x.Log()