public static IFaceInstruction <R> MapI <T, R>(this IFaceInstruction <T> instruction, Func <T, R> f)
{
Func <Member1 <T>, Func <T, R>, Member1 <R> > mapM1 = (m1, g) =>
{
(var data, var f) = m1;
return(new Member1 <R>(data, x => g(f(x))));
};
Func <Member2 <T>, Func <T, R>, Member2 <R> > mapM2 = (m2, g) =>
{
(var data, var f) = m2;
return(new Member2 <R>(data, x => g(f(x))));
};
return(instruction switch
{
Member1 <T> m1 => mapM1(m1, f),
Member2 <T> m2 => mapM2(m2, f),
_ => default
});
public static void Deconstruct <T>(this Member2 <T> m1, out string data, out Func <int, T> f)
{
data = m1.Data;
f = m1.F;
}