internal static RndResult <B> Select <A, B>(this RndResult <A> res, Func <A, B> func)
{
if (!res.WasSuccessful)
{
return(new RndResult <B>());
}
return(new RndResult <B>(func(res.Result)));
}
internal static RndResult <C> SelectMany <A, B, C>(
this RndResult <A> res,
Func <A, RndResult <B> > func,
Func <A, B, C> selector)
{
if (!res.WasSuccessful)
{
return(new RndResult <C>());
}
var resB = func(res.Result);
if (!resB.WasSuccessful)
{
return(new RndResult <C>());
}
return(new RndResult <C>(selector(res.Result, resB.Result)));
}
internal static RndResult <B> SelectMany <A, B>(this RndResult <A> res, Func <A, RndResult <B> > func)
{
return(res.SelectMany(func, (_, b) => b));
}
