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Scala User Group

2020 February 27

Oℕ

You can define instances of some typeclasses to unify some of your functions.
But in general it requires to create new abstract framework.
It's not a simple task, because if it were simple, spark authors would already achieve this

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13:51пожаловаться #1

Oℕ

Oleg ℕizhnik in Scala User Group

So I strongly recommend to gain more scala knowledge for now.
Unification of local synchronous collections and RDD/Dataframes requires a lot of design skill and full library author potential

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13:52пожаловаться #2

Zeeshan Haider in Scala User Group

Oleg ℕizhnik

So I strongly recommend to gain more scala knowledge for now.
Unification of local synchronous collections and RDD/Dataframes requires a lot of design skill and full library author potential

So I should leave this now for later, and follow any simple solution?

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14:15пожаловаться #3

Oℕ

Oleg ℕizhnik in Scala User Group

Zeeshan Haider

So I should leave this now for later, and follow any simple solution?

Yeah. I suppose you can abstract some simple cases.
map can be abstracted using

Functor
filter

and collect can be abstracted using

FunctorFilter
++

, concat can be abstracted using

MonoidK
single

, fromSeq can be abstracted using Applicative and

MonoidK

All of those are allready part of mentioned cats library and have sence for scala collections as well for RDDs

Then you can write more scala code and think of more interesting abstractions for your tasks

M in Scala User Group

https://typelevel.org/cats/typeclasses/functor.html

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14:26пожаловаться #4

Oℕ

Oleg ℕizhnik in Scala User Group

Zeeshan Haider

So I should leave this now for later, and follow any simple solution?

But in order to use typeclasses in your app effectively you need to practice more. One way is to do some exercices https://www.scala-exercises.org/cats/semigroup

Scala Exercises

Cats | Semigroup

Cats Is A Library Which Provides Abstractions For Functional Programming In The Scala Programming Language.