public static Maybe <V> SelectMany <T, U, V>(this Maybe <T> maybe,
Func <T, Maybe <U> > selector,
Func <T, U, V> project)
{
return(maybe.Unwrap(
x => selector(x).Unwrap(u => project(x, u), Maybe <V> .None),
Maybe <V> .None));
}
public static List <T> ToList <T>(this Maybe <T> maybe)
{
return(maybe.Unwrap(value => new List <T> {
value
}, new List <T>()));
}
public static T Unwrap <T>(this Maybe <T> maybe, T defaultValue = default(T))
{
return(maybe.Unwrap(x => x, defaultValue));
}
public static T Unwrap <T>(this Maybe <T> maybe, T defaultValue = null)
where T : class
{
return(maybe.Unwrap(x => x, defaultValue));
}