2023¶

Notes of Lawys-Of-Reflection

This article notes ideas after reading go blog laws-of-reflection. This blog presents some whim ideas during reading and check further for them. It's not a duplication for the blog, and if you are not familiar with the topic, read the original blog first.

Why Applicative Functor Currying While Fmap

Why applicative functor could currying a function while calling fmap? What are processes to calculate it?

ghci> (\x y z -> [x, y, z]) <$> (+3) <*> (*2) <*> (/2) $ 5
[8.0,10.0,2.5]

This is my anwser for the question Applicative functors: why can fmap take a function with more than one argument? in stackoverflow.

What is the purpose of the reader monad?

This blog answered the question of What is the purpose of the reader monad? in my view. The original answer stays on stackoverflow.