public static Option <T> TryFind <T>(this IEnumerable <T> self, Func <T, bool> predicate)
{
var list = self.Where(predicate)
.Take(1)
.ToList();
return(list.Count == 1 ? Option <T> .AsOption(list.FirstOrDefault()) : Option <T> .None);
}
public static Option <OUT> Try <OUT>(Func <OUT> function)
{
try
{
return(Option <OUT> .AsOption(function.Invoke()));
}
catch
{
return(Option <OUT> .None);
}
}
public Option <OUT> Select <OUT>(Func <T, OUT> selector)
{
return(IsSome
? Option <OUT> .AsOption(selector.Invoke(_value))
: Option <OUT> .None);
}
public Option <OUT> OfType <OUT>()
{
return(IsSome
? _value is OUT ? Option <OUT> .AsOption((OUT)(object)_value) : Option <OUT> .None
: Option <OUT> .None);
}