Haskell Lenses From Scratch

[@enricomariadeangelis2130]

Simply excellent. 22 minutes so dense of knowledge!

[@danielandrespintoalvarado3546]

That was a very clean introduction, really love how you present the ideas in a very easy to follow (and even easy to guess what's coming) way

[@siquod]

Good explanation! But I don't think that's existential quantification. It's universal quantification. Existential quantification would be if the Functor instance would somehow be included in the data of the lens, but here it is a free parameter.

[@TankorSmash]

Thanks for putting this out there, very easy to follow! Plenty of terms to look up now, thanks!

[@designernasser]

Good video, one little note, the keyboard is a bit loud :)

[@daniilchalov1491]

It's kinda advantage

[@tobzdaman619]

By far the best video, thank you :)

[@EtienneBatise]

This way of explaining things really clicks with me. Thanks a lot for that. please do more 🙏

[@deadvatniks]

I though you've been referring to that mechanical keyboard

[@robotpotato6892]

Good explanation, thank you.

[@andrearossato4087]

many thanks for this wonderful video. I was looking to include lenses in a project of mine and this was indeed very helpful.
One thing, though: it is just me or lenses composition reminds more arrow composition than function's?
I mean, I'd find more natural to write:
set (_2 . barL) 10 myFoo
then
set (barL . _2) 10 myFoo
hope you'll post some more!

[@shiorinyan]

Hey, your videos are lovely,
Looking forward to more :D

[@devxeq159]

This video is fantastic! Do you still make Haskell content?

[@aBamieh]

Thanks for the content. Although it would be great if you dont use 'foo' 'bar' but rather a real concrete example. i found it slightly hard to follow along

[@thehaskellgoose9525]

Hey thanks! I'll definitely consider that for the next video.

[@DanDart]

Hecc yes. Part 2?

[@kid-vf4lu]

Great video, great teacher!
If you create a patreon, I will contribute

[@maxreuv]

Good start, thank you, keep going!

[@maheerali531]

Key please make up something practical using haskell. Maybe a backend with db connection.

[@radhikaiyer8012]

Hi.. thanks for a the video. Can u use a real world example like say an address book instead of foo bar next time.. also a close up of code would be useful.

[@michaelkohlhaas4427]

Is there more to come from you? Nice video! Is there a gist of the code?

[@librarygangster9108]

wow this was very useful, thank you very much !

[@chiroptical]

Awesome video!

[@marcmigge]

Great video! In the final example is the (1, 'c') tuple still part of a Foo? It seems to me that the types do not match.

[@halogen64]

It is modifying `myTuple`, which is independent of Foo

[@marcmigge]

@@halogen64 You are right, but myTuple also is of type (Int, Int). Don't I lose all the benefits of static typing if I implement lenses like this?

[@darcyharding5809]

Thanks!

[@JohnCinnamond]

This is great -- thank you!

[@TimTeatro]

Thanks! Colorscheme?

[@thehaskellgoose9525]

No problem! I'm using this: draculatheme.com/vim

[@TimTeatro]

@@thehaskellgoose9525 Thanks!

[@akshaynaik4888]

Nice video. Keyboard ?

[@user-xu9zx9fd7n]

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