pico-event vs Monocle

pico-event

Tiny publish subscribe library (by pico-works)

Extensions

Source Code

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Monocle

Optics library for Scala (by optics-dev)

Extensions Scala Functional programming Optics Lens Typelevel Cats

Source Code

optics.dev

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pico-event		Monocle
	Project
-	Mentions	5
15	Stars	1,632
-	Growth	0.2%
0.0	Activity	8.2
about 7 years ago	Latest Commit	14 days ago
Scala	Language	Scala
MIT License	License	MIT License

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

pico-event

Posts with mentions or reviews of pico-event. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning pico-event yet.
Tracking mentions began in Dec 2020.

Monocle

Posts with mentions or reviews of Monocle. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-04-12.

Ref in cats-effect. When should I use it, and when should I not?
1 project | /r/scala | 9 Jul 2022

Without concurrency, using a Ref doesn't buy you anything over just using a var. If you want the benefits of immutability with an API that resembles mutability, you have to use something like Monocle.
Show HN: Monocle – bidirectional code generation library
10 projects | news.ycombinator.com | 12 Apr 2022

A very popular Scala optics library is also called Monocle. I’ve been a happy user for a few years:
https://github.com/optics-dev/Monocle
Monocle 3 release candidate - a super useful and simple library for optics with poetic api
1 project | /r/scala | 1 Jun 2021

See example https://www.optics.dev/Monocle/
Monocle 3.0.0-M1 is released for Scala 2.13 and Scala 3
1 project | /r/scala | 19 Feb 2021
Monocle 3 Roadmap
3 projects | /r/scala | 21 Jan 2021

We always have work to do, for example to define scalfix rules to automate the migration https://github.com/optics-dev/Monocle/issues/1001

What are some alternatives?

When comparing pico-event and Monocle you can also consider the following projects:

idid - A common interface for different Id types

Quicklens - Modify deeply nested case class fields

Shapeless - Generic programming for Scala

Ammonite-Ops - Scala Scripting

Chimney - Scala library for boilerplate-free, type-safe data transformations

refined - Refinement types for Scala

cats - Lightweight, modular, and extensible library for functional programming.

scala.meta - Library to read, analyze, transform and generate Scala programs

Scalaz - Principled Functional Programming in Scala

ScalaTest - A testing tool for Scala and Java developers

Scala Graph - Graph for Scala is intended to provide basic graph functionality seamlessly fitting into the Scala Collection Library. Like the well known members of scala.collection, Graph for Scala is an in-memory graph library aiming at editing and traversing graphs, finding cycles etc. in a user-friendly way.