public static void Run()
{
// 1 Write a generic function that takes a string and parses it as a value of an enum. It
// should be usable as follows:
Option <DayOfWeek> a = Enum.Parse <DayOfWeek>("Friday"); // => Some(DayOfWeek.Friday)
// Enum.Parse<DayOfWeek>("Freeday") // => None
// 2 Write a Lookup function that will take an IEnumerable and a predicate, and
// return the first element in the IEnumerable that matches the predicate, or None
// if no matching element is found. Write its signature in arrow notation:
bool isOdd(int i) => i % 2 == 1;
var b = new List <int>().Lookup(isOdd); // => None
var c = new List <int> {
1
}.Lookup(isOdd); // => Some(1)
// 3 email thing
// Email is a type using a smart constructor to return a new Email(string) if the string is valid
Option <Email> email = Email.Create("*****@*****.**");
var x = Thing.Create();
}
public static Option <DayOfWeek> GetDay(string input)
{
return(Enum.Parse <DayOfWeek>(input));
}