etrvic

I’ve started learning haskell a few weeks ago and I’ve been recently trying to understand what a monad is. I can’t seem to find and explanation that makes sense. Every other comment on the subject seems to be about how no one can explain what is a monad.

For example I don’t understand (beyond the concept as a whole): 1. How do monads allow side effects if you can’t have side effects in Haskell? 2. Are monads just a name for a reccuring way to aproach a problem? 3. In what scenario would you use a monad, or for what type of problem?

I was recently browsing the best tab on HN, and I noticed it's functionality changed, although I might be wrong.

I'm curious about how people find the articles and posts they share on Hacker News. Do you have specific websites, newsletters, or tools that you use to stay up-to-date?