// Your Match method returns void, it is not good in functional programming,
// because, whole purpose of the method returning void is the change state,
// and in FP state is immutable
// That's why I've created PureMatch method for you
public Choice <T1Out, T2Out> PureMatch <T1Out, T2Out>(Func <T1, T1Out> onChoice1Of2, Func <T2, T2Out> onChoice2Of2)
{
Choice <T1Out, T2Out> result = null;
Match(
t1 => result = new Choice1Of2 <T1Out, T2Out>(onChoice1Of2(t1)),
t2 => result = new Choice2Of2 <T1Out, T2Out>(onChoice2Of2(t2)));
return(result);
}
// This method will help with the complex matching
public static Choice <T1, T2> Flat <T1, T2>(this Choice <Choice <T1, T2>, T2> choice)
{
Choice <T1, T2> result = null;
choice.Match(
t1 => result = t1,
t2 => result = new Choice2Of2 <T1, T2>(t2));
return(result);
}
