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Simon Marlow - Reflections on Haskell@Meta

The Haskell Foundation

1.3K subscribers • 2 videos on Hallway

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  • Recommended by 2 people: 1 on Lobsters and 1 in engineering communities.
  • Presented by Simon Marlow, Software Engineer at Meta

Intermediate. Assumes working knowledge.

6K views1 year ago2 recommendations

Programming languagesSystems programmingHaskellPerformance and optimizationConcurrency and parallelism

Simon Marlow reflects on the history, challenges, and successes of using Haskell at scale within Meta.

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2 people recommend this

What people say. Recommended as a highly anticipated retrospective on using Haskell in production at Meta by Simon Marlow.

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u/_0-__-0_in r/haskell • Recommends

Simon Marlow – Reflections on Haskell@Meta
56View on Reddit

gnyekion Lobsters • Recommends

Reflections on Haskell@Meta
13View on Lobsters

u/n00bombin r/haskell • Mentions

On “Arguments for Haskell at scale”

Highly recommended [Simon Marlow - Reflections on Haskell@Meta ]
8View on Reddit

u/n00bombin r/haskell • Mentions

On “Is Parallel and Concurrent Programming in Haskell Still Worth It in 2026?”

can check what /u/simonmar said https://bsky.app/profile/simonmar.bsky.social/post/3llh3fhdot22b and link to this video
3View on Reddit

u/Apart_Ebb_9867in r/functionalprogramming • Mentions

On “FP Software Development”

if you go to a chemistry subreddit asking how to produce carbon monoxide in order to kill yourself you can only expect people to challenge the fundamentals of "killing yourself" and provide zero help on actually producing carbon monoxide. You cannot then go "dudes, this is a chemistry subreddit and I asked about carbon monoxide not a lecture on life" What you're saying is nonsense. Your claims that you're covered on the business side because of a class you took in high school is delusional. And I'm not convinced you actually really agree to many of the "I agree" you posted, because if you did you wouldn't have asked the question you asked. Anyhow, there're companies who do use functional l…
2View on Reddit

u/n00bombin r/haskell • Mentions

On “Is Haskell deliberately staying away from main-stream programming”

> Haskell is just fundamentally a bad language for building complex applications. Don't you think that Meta, Standard Chartered, Mercury, Anduril and other companies are building complex applications?
2View on Reddit

u/Comfortable_Ability4in r/haskell • Mentions

On “Why Haskell is the perfect fit for renewable energy tech”

I haven't encountered any problems due to lack of ecosystem in Haskell within the domain that I work in. And it appears that others haven't either: - link to this video - link to this video (One reason you don't hear as much about Haskell as you do about other languages is that Haskell teams tend to stay small, happy and productive)
1View on Reddit