Brian Beckman: Don't fear the Monad

Why HN readers recommended it

HN repeatedly recommends it as the clearest and most correct beginner explanation of monads, with several commenters saying it finally made them click.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel

jasonofthel33t

Topic

monads

Format

lecture

Level

intro

HN recommenders in dataset

9

HN mentions in dataset

16

Recommendation years in dataset

2012–2024

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

• To be fair, (I think) you don't need to know category theory to successfully apply FP principles and/or use any functional language. I had a great (GREAT) success at using erlang not only not knowing what monad is, but even not knowing about existence of …

• I don't know category theory, so I defer to more knowledgeable people here, but that sounds strange: "Functor it understands how to take doStuff and execute it on the value inside itself, then spit out a new Optional. You don't lose the int-ness or optional-ness." …

• Apples and oranges. A monad is just an idea; that of storing computations as values. This is useful because these computations can be composed together in a manner not unlike that of a pipeline in shell scripting. Different monads define different ways of composing these …