public static IMaybe <T> FirstOrNone <T>(this IEnumerable <T> enumerable)
{
try
{
var first = enumerable.FirstOrDefault();
if (first.IsNull())
{
return(MonadFunctions.none <T>());
}
else if (first.Equals(default))
public IResult <IEnumerable <T> > IfAllSuccesses()
{
var list = new List <T>();
foreach (var result in enumerable)
{
handle(result);
if (result.Out(out var value, out var original))
{
list.Add(value);
}
else
{
return(original.ExceptionAs <IEnumerable <T> >());
}
}
return(MonadFunctions.success <IEnumerable <T> >(list));
}
public Matching(IMatched <T> matched)
{
this.matched = matched;
action = MonadFunctions.none <Func <TResult> >();
}
public static IMaybe <T> SomeIfNotNull <T>(this T obj) => MonadFunctions.when(!obj.IsNull(), () => obj);
