Haskell : Applicative Functor -


I'm new to Haskell I've made a type of holi 3. 

  Data is probably 3a = just 3a. Unknown 3 | Missing 3 dirvings (show, eq, ord) eq3 :: ek a => Maybe 3A- & gt; Maybe 3A- & gt; Bool3 eq3 unknown 3 _ = Unk3 eq3 missing 3 _ = false 3 eq3 _ missing 3 = wrong 3 eq3 _ unknown 3 = unq 3 eq3 (bus 3a) (bus 3b) = if a == b again true3 other false 3

3 How to make an application funny? And how can it make mondad?

main idea

I understand that is missing 3 and unknown 3 work in some way, except that they do not have any answers, give a little more feedback about it, so each of them Be slightly different to others. Of course I think that missing 3 should be treated as nothing may :

Functor

may be for

code>: 

  for example Factor Maybe where fmap _ nothing = no fmap f (bus a) = bus (fa)

I think it is clear how missing 3 and Deal with Unknown 3 .

Monaud 

  Example Monad probably where (just x) & gt; & Gt; ; = K = kx Nil & gt; & Gt; = _ = None (just _) & gt; & Gt; K = k Nothing & gt; & Gt; You can not help but here   << code>  3  And  Unknown 3 , because you do not have any value to bind. The only question is whether you  Unknown3  or  missing 3 ? 
 
 can be failed with 
 
 Here is a little more excavation: 
 
  The example can be applied where the net = return (< ; * & Gt;) = ap ap: (Monad M) => Me (A -> B) - & gt; I'm a - & gt; I B AP = Lift M2 ID lift M2 :: (Monad M) = & gt; (A1 - & gt; a2 - & gt; r) - & gt; Mee 1 - & gt; Me A2 - & gt; I Lift M2FM1M2 = Do {x1 & lt; - M1; X2 and lieutenant; - M2; Returns (f x1 x2)}  
 
 Now its translation 
 
  mf & lt; * & Gt; Mx = do f & lt; - mf x & lt; - mx return (fx)  
 
 You can use one time to turn a silent into an attacker. 
 
 On one side: The application is great. 
 
 In fact, whenever you write yourself 
 
  this object = do something & lt; - Some monetary things & lt; - Something else  
  this thing = combination and ; $ & Gt;  
; Some monaedic matter & lt; * & Gt; Some other thing & lt; * & Gt; One more thing

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