public static MaybeTC <T> First <T>(this FuncyListTC <T> source)
{
if (source.IsNil)
{
return(MaybeTC.None <T>());
}
else
{
return(MaybeTC.Some(source.ToCons().Head));
}
}
public static MaybeTC <T> Last <T>(this FuncyListTC <T> source)
{
if (source.IsNil)
{
return(MaybeTC.None <T>());
}
else
{
return(MaybeTC.Some(((IEnumerable <T>)source).Last()));
}
}
public static MaybeTC <T> ElementAt <T>(this FuncyListTC <T> source, int index)
{
if (source.IsNil)
{
return(MaybeTC.None <T>());
}
if (index < 0)
{
return(MaybeTC.None <T>());
}
if (index >= source.Count())
{
return(MaybeTC.None <T>());
}
return(MaybeTC.Some(((IEnumerable <T>)source).ElementAt(index)));
}
