Freestyle alternatives and similar packages
Based on the "Extensions" category.
Alternatively, view freestyle alternatives based on common mentions on social networks and blogs.
-
Twitter Util
General-purpose Scala libraries, including a future implementation and other concurrency tools. -
better-files
Simple, safe and intuitive Scala I/O. better-files is a dependency-free pragmatic thin Scala wrapper around Java NIO. -
Cassovary
A Scala library that is designed from the ground up for space efficiency, handling graphs with billions of nodes and edges. -
Enumeratum
A macro to replace Scala enumerations with a sealed family of case objects. This allows additional checks for the compiler, e.g. for missing cases in a match statement. Has additinal support for Json libraries and the Play framework. -
Scala Graph
A Scala library with basic graph functionality that seamlessly fits into the Scala standard collections library. -
Eff
Extensible effects are an alternative to monad transformers for computing with effects in a functional way. -
Hamsters
A mini Scala utility library. Compatible with functional programming beginners. Featuring validation, monad transformers, HLists, Union types. -
scribe
Practical logging framework that doesn't depend on any other logging framework and can be completely configured programmatically. -
Scala Blitz
A library to speed up Scala collection operations by removing runtime overheads during compilation, and a custom data-parallel operation runtime. -
Play monadic actions
A simple scala DSL to allow clean and monadic style for Play! Actions -
Freedsl
A library to implement composable side effects, weaving typeclasses on a wrapping type and the free monad. -
Resolvable
A library to optimize fetching immutable data structures from several endpoints in several formats.
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README
Documentation
Full documentation available at http://frees.io
Build purely functional applications and libraries
Build stack-safe purely functional applications and libraries that support parallel and sequential computations where declaration is decoupled from interpretation. Freestyle encourages programs built atop Free algebras that are interpreted at the edge of your application ensuring effects are localized and performed in a controlled environment. Applications built with Freestyle can be interpreted to any runtime semantics supported by the interpreter target type.
import freestyle.free._
@free trait Database {
def get(id: UserId): FS[User]
}
@free trait Cache {
def get(id: UserId): FS[User]
}
@module trait Persistence {
val database: Database
val cache: Cache
}
Automatic Dependency Injection
Freestyle includes all the implicit machinery necessary to achieve seamless dependency injection of @free
and @module
Algebras.
Simply require any of your @free
or @module
trait as implicits where needed.
def storedUsers[F[_]]
(userId: UserId)
(implicit persistence: Persistence[F]): FreeS[F, (User, User)] = {
import persistence._
for {
cachedUser <- cache.get(userId)
persistentUser <- database.get(userId)
} yield (cachedUser, persistentUser)
}
Ready to use integrations
Freestyle ships with ready to use algebras and convenient syntax extensions covering most of the application concerns such as persistence, configuration, logging, etc.
In addition Freestyle includes commonly used FP effects stack such as option
, error
, reader
, writer
, state
based on the capabilities of
the target runtime interpreters.
def loadUser[F[_]]
(userId: UserId)
(implicit
doobie: DoobieM[F],
logging: LoggingM[F]): FreeS[F, User] = {
import doobie.implicits._
for {
user <- (sql"SELECT * FROM User WHERE userId = $userId"
.query[User]
.unique
.liftFS[F])
_ <- logging.debug(s"Loaded User: ${user.userId}")
} yield user
}
Modules
freestyle - Core module including building blocks for boilerplate free FP programs and apps over Free monads and cats.
effects - MTL style effects such as reader, writer, state, error, and more modeled as free algebras.
logging - A purely functional logging algebra over Verizon's Journal.
cache - A generic cache with in memory and redis based implementations.
Integrations
fetch - Integration with the Fetch library for efficient data access from heterogenous datasources.
fs2 - Integration to run fs2 Streams in Freestyle programs.
monix - Instances and utilities to interpret to
monix.eval.Task
.slick - Embedding of DBIO actions in Freestyle programs.
doobie - Embedding of Doobie ConnectionIO actions in Freestyle programs.
http - Adapters and marshallers to run the Freestyle program in endpoint return types for akka-http, finch, http4s and play.
Freestyle Artifacts
Freestyle is compatible with both Scala JVM and Scala.js.
This project supports Scala 2.11 and 2.12. The project is based on scalameta.
To use the project, add the following to your build.sbt:
addCompilerPlugin("org.scalameta" % "paradise" % "3.0.0-M11" cross CrossVersion.full)
For Scala.jvm:
// required
libraryDependencies += "io.frees" %% "frees-core" % "0.8.2"
// optional - effects and patterns
libraryDependencies += "io.frees" %% "frees-effects" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-async" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-async-cats-effect" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-async-guava" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-cache" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-config" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-logging" % "0.8.2"
// optional - integrations
libraryDependencies += "io.frees" %% "frees-cache-redis" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-doobie" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-fetch" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-akka" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-finch" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-http-client" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-http4s" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-monix" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-play" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-slick" % "0.8.2"
libraryDependencies += "io.frees" %% "frees-twitter-util" % "0.8.2"
For Scala.js:
// required
libraryDependencies += "io.frees" %%% "frees-core" % "0.8.2"
// optional - effects and patterns
libraryDependencies += "io.frees" %%% "frees-effects" % "0.8.2"
libraryDependencies += "io.frees" %%% "frees-async" % "0.8.2"
libraryDependencies += "io.frees" %%% "frees-async-cats-effect" % "0.8.2"
libraryDependencies += "io.frees" %%% "frees-async-fs2" % "0.8.2"
libraryDependencies += "io.frees" %%% "frees-async-monix" % "0.8.2"
libraryDependencies += "io.frees" %%% "frees-cache" % "0.8.2"
libraryDependencies += "io.frees" %%% "frees-http-client" % "0.8.2"
libraryDependencies += "io.frees" %%% "frees-logging" % "0.8.2"
// optional - integrations
libraryDependencies += "io.frees" %%% "frees-fetch" % "0.8.2"
libraryDependencies += "io.frees" %%% "frees-monix" % "0.8.2"
Freestyle Examples
- [todolist-lib](./modules/examples/todolist-lib).
- [todolist-http-http4s](./modules/examples/todolist-http-http4s).
- [todolist-http-finch](./modules/examples/todolist-http-finch).
- [slick-example](.modules/examples/slick-example).
Commercial Support
47 Degrees offers commercial support for the Freestyle framework and associated technologies. To find out more, visit 47 Degrees' Open Source Support.
Copyright
Freestyle is designed and developed by 47 Degrees
Copyright (C) 2017-2018 47 Degrees. http://47deg.com
*Note that all licence references and agreements mentioned in the Freestyle README section above
are relevant to that project's source code only.