Son: “Well. Hm. If the function is the (+), then you first apply that to the 1. So…..you have something like (1 +)? And now you apply that to the 2? And then you get the final answer?” Seriously? He grabbed the idea…
Finally I found out the correct version: foldr (+) 0 [1,2,3] 1. + contains only special characters and must be used either as infix function (1 + 2) or be enclosed in brackets 2. You need an initial value for the…
Son: “Well. Hm. If the function is the (+), then you first apply that to the 1. So…..you have something like (1 +)? And now you apply that to the 2? And then you get the final answer?” Seriously? He grabbed the idea…
Finally I found out the correct version: foldr (+) 0 [1,2,3] 1. + contains only special characters and must be used either as infix function (1 + 2) or be enclosed in brackets 2. You need an initial value for the…