case-class – Page 2 – Make Me Engineer

Cleaner way to update nested structures

June 10, 2022 by Tarik

Funny that no one added lenses, since they were MADE for this kind of stuff. So, here is a CS background paper on it, here is a blog which touch briefly on lenses use in Scala, here is a lenses implementation for Scalaz and here is some code using it, which looks surprisingly like your … Read more

Case objects vs Enumerations in Scala

May 14, 2022 by Tarik

One big difference is that Enumerations come with support for instantiating them from some name String. For example: object Currency extends Enumeration { val GBP = Value(“GBP”) val EUR = Value(“EUR”) //etc. } Then you can do: val ccy = Currency.withName(“EUR”) This is useful when wishing to persist enumerations (for example, to a database) or … Read more