public static Try <Validation <Fail, B> > Traverse <Fail, A, B>(this Validation <Fail, Try <A> > ma, Func <A, B> f) => () =>
{
if (ma.IsFail)
{
return(new Result <Validation <Fail, B> >(Fail <Fail, B>(ma.FailValue)));
}
else
{
var mr = ma.SuccessValue();
if (mr.IsBottom)
{
return(new Result <Validation <Fail, B> >(BottomException.Default));
}
if (mr.IsFaulted)
{
return(new Result <Validation <Fail, B> >(mr.Exception));
}
return(new Result <Validation <Fail, B> >(Validation <Fail, B> .Success(f(mr.Value))));
}
};
public static TryOption <Validation <MonoidFail, Fail, B> > Traverse <MonoidFail, Fail, A, B>(
this Validation <MonoidFail, Fail, TryOption <A> > ma, Func <A, B> f)
where MonoidFail : struct, Monoid <Fail>, Eq <Fail> => () =>
{
if (ma.IsFail)
{
return(new OptionalResult <Validation <MonoidFail, Fail, B> >(Fail <MonoidFail, Fail, B>(ma.FailValue)));
}
var mr = ma.SuccessValue();
if (mr.IsBottom)
{
return(new OptionalResult <Validation <MonoidFail, Fail, B> >(BottomException.Default));
}
if (mr.IsFaulted)
{
return(new OptionalResult <Validation <MonoidFail, Fail, B> >(mr.Exception));
}
if (mr.IsNone)
{
return(OptionalResult <Validation <MonoidFail, Fail, B> > .None);
}
return(new OptionalResult <Validation <MonoidFail, Fail, B> >(Validation <MonoidFail, Fail, B> .Success(f(mr.Value.Value))));
};