Jon Pretty on Twitter: "But then it comes down to a question of what that style should be. A lot of it is bikeshedding: A match or a fold will both work, and there are advantages to concision as well as explicitness. But consistency is also valuable, which I guess is where the pressure was coming from.… https://t.co/raEfrwXrh6"

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Vaughn Vernon‏ @VaughnVernon 7 Apr 2018

Vaughn Vernon Retweeted Gary Bernhardt

Minus the formal calculus, I've been saying this for ages. Programmers invent their own complexity, which is always unnecessary, and often accidental. But accidental is because they don't understand the problem well enough.https://twitter.com/garybernhardt/status/982823194846420992?s=19 …

Vaughn Vernon added,

Gary Bernhardt @garybernhardt

My favorite reason to learn a bit about the lambda calculus: it shows us 1) how simple computation is (at first it seems too simple to compute anything "real"); and 2) all of our programming complexity is invented by us (for reasons both good and bad). https://mobile.twitter.com/snowpolar/status/982673251821240322 …

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Vaughn Vernon‏ @VaughnVernon 7 Apr 2018

This is the worst when a programmer thinks it makes them look smarter than everyone else. I have zero tolerance for this attitude. It's the path to project failure, and when I have the choice I would terminate that programmer. Sadly few managers understand this.

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somebodynice‏ @someoneverycoo1 7 Apr 2018

Replying to @someoneverycoo1 @VaughnVernon

It is also subjective. I once had a team lead that get unhappy with me because I used map, filter, reduce. I honestly felt it wasn't anything complex and make things cleaner

1 reply 0 retweets 0 likes

Vaughn Vernon‏ @VaughnVernon 7 Apr 2018

Replying to @someoneverycoo1 @SnowPolar

Vaughn Vernon Retweeted Jon Pretty

I saw this very opinionated tweet the other day, which to me read like "my goal is to fit in." I also concluded that his suggested code was obscure. Read the replies and see what the consensus is.https://twitter.com/propensive/status/981805791228387328?s=19 …

Vaughn Vernon added,

Jon Pretty @propensive

Stop using, opt match { case Some(x) => f(x); case None => y } Stop using, http://opt.map (f).getOrElse(y) Use, opt.fold(y)(f) I feel like I'm very late to this party.

2 replies 0 retweets 1 like

Vaughn Vernon‏ @VaughnVernon 7 Apr 2018

Replying to @VaughnVernon @SnowPolar

Saddest to me is, I have worked on projects where if I don't use these obscure Scala expressions, my code won't pass reviews. This is my biggest turnoff to FP. It's infected w entirely subjective, opinionated complexity. As if any other kind of non-imparative expression is wrong.

2 replies 1 retweet 3 likes

Jon Pretty‏ @propensive 8 Apr 2018

Replying to @VaughnVernon @SnowPolar

I think that obscurity can be subjective too, though. I can't speak for your code reviews, but developers often extrapolate from their experience and try to overgeneralize it with what appears to be unwarranted conviction to anyone else. I think that's quite common in FP.

1 reply 0 retweets 0 likes

Vaughn Vernon‏ @VaughnVernon 8 Apr 2018

Replying to @propensive @SnowPolar

To be explicit, if I write the following, it is wrong, "not FP enough": val a = o match { case Some(x) => f(x); case None => y } I must refactor to this: val a = o.fold(y)(f) I've been told that if-else *expressions* and getOrElse() should be removed from lang/lib.

2 replies 0 retweets 0 likes

Jon Pretty‏ @propensive 8 Apr 2018

Replying to @VaughnVernon @SnowPolar

You mean *someone* thinks its wrong... But I think it's useful for projects to have a "house style". FP sometimes presents a few ways of doing the same thing, and it's easier for someone new to understand the code if everyone on the team uses the same style.

2 replies 0 retweets 0 likes

Jon Pretty‏ @propensive 8 Apr 2018

Replying to @propensive @VaughnVernon @SnowPolar

But then it comes down to a question of what that style should be. A lot of it is bikeshedding: A match or a fold will both work, and there are advantages to concision as well as explicitness. But consistency is also valuable, which I guess is where the pressure was coming from.

12:44 AM - 8 Apr 2018 from Warsaw, Poland

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