semuserable

open FSharp.Data
open FSharp.Data.JsonExtensions
open System.IO
open System

module City =    
    type T = City of string

    let Kyiv = City "Киев" 
    let Kharkiv = City "Харьков" 

semuserable

[System.Runtime.InteropServices.DllImport("KERNEL32.DLL")]
private static extern int GetSystemDefaultLCID();

private RegionInfo CurrentRegionInfo()
{
    var cultureInfo = new CultureInfo(GetSystemDefaultLCID());
    return new RegionInfo(cultureInfo);
}

// OR (it's preferable if Vista or higher)

semuserable

public static class RxExamples
{
    // Equal to Observable.Empty<T>()
    public static IObservable<T> Empty<T>()
    {
        return Observable.Create<T>(observer =>
        {
            observer.OnCompleted();
            return Disposable.Empty;
        });

semuserable

static void Main()
{
    IObservable<int> observable = Enumerable.Range(0, 10).ToObservable();
    
    // Long version
    observable.Subscribe(new IntObserver());
    
    // Short version (lambda)
    observable.Subscribe(Console.WriteLine)