多个表达式的中缀形式的应用程序优先级

Question

Say I have this expression:

instance FromRow MyData where
  fromRow =  MyData <$> field <*> field <*> field 

I can't undertand the application precedence because everything is written in the infix form. Can you help me? Is this correct?

fromRow =  MyData (1) <$> (2) field  (3) <*>  (4) field  (5) <*>  (6) field 

Answer 1

Both <$> and <*> are left-associative, so your numbering is correct. You could also write it using parentheses like this:

(((MyData <$> field) <*> field) <*> field)