stateful4k alternatives and similar libraries
Based on the "Misc" category.
Alternatively, view stateful4k alternatives based on common mentions on social networks and blogs.
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jclasslib
jclasslib bytecode viewer is a tool that visualizes all aspects of compiled Java class files and the contained bytecode. -
kotlin-logging
Lightweight logging framework for Kotlin. Used as a wrapper for slf4j with Kotlin extensions. -
klock
Consistent and portable date and time utilities for multiplatform kotlin (JVM, JS and Common). -
kotlin-telegram-bot
A wrapper for the Telegram Bot API written in Kotlin. -
kotlinx.reflect.lite
Lightweight library allowing to introspect basic stuff about Kotlin symbols. -
Humanizer.jvm
Humanizer.jvm meets all your jvm needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities. -
actions-on-google-kotlin
Port of official Node.js SDK to Kotlin. Complete with all features and tests and nearly identical API. -
klutter
A mix of random small libraries for Kotlin, the smallest reside here until big enough for their own repository. -
SimpleDNN
SimpleDNN is a machine learning lightweight open-source library part of KotlinNLP and has been designed to support relevant neural network architectures in natural language processing tasks. -
kassava
This library provides some useful kotlin extension functions for implementing toString() and equals() without all of the boilerplate. -
kotlin-futures
A collections of extension functions to make the JVM Future, CompletableFuture, ListenableFuture API more functional and Kotlin like. -
kasechange
Multiplatform Kotlin library to convert strings between various case formats including Camel Case, Snake Case, Pascal Case and Kebab Case -
PrimeCalendar
Provides all of the java.util.Calendar functionalities for Civil, Persian, Hijri, Japanese, etc, as well as their conversion to each other.
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README
Stateful for Kotlin
State Machine Construction Kit for Kotlin
[Stateful](doc/stateful4k.png)
This is Stateful ported to JVM. I could have re-implemented this in Java but there would be no learning factor in it. So I decided to use Kotlin. ...And, oh man, I'm glad I did.
Requirements
I had some non standard requirements for the state machine:
- Events should be able to carry data - for example, hypothetical event
KeyPressed
should also carry information which key has been actually pressed; - States should be able hold data - for example, state collecting key presses (let's call it
EnteringText
) should be able to hold a list of keys pressed so far; - Guard statements should have access to both current state and event - for example,
KeyPressed
event may cause transition to different state depending which key has been pressed;
Dot Driven Development
One of the design decisions is "Dot Driven Development". The only class which you need to know upfront is StateMachine
, everything else can be discovered by pressing a dot (and relying on IntelliSense tab completion, whatever you call it).
Configurator and Executor
Rules of state machine are configured by object called Configurator
but executed with object called Executor
. Single Configurator
can be used to create multiple Executors
. For example, there is shared set of rules how your communication should work (single Configurator
) but you can have multiple ports open talking to different servers (many Executors
).
Context, State and Event
There are three types you need to provide to Configurator
- Context
, State
and Event
. While State
and Event
are quite obvious, Context
might need few words of explanation. Context
is the data shared by all states. As it is not necessary (this shared data could be passed from one state to another) it helps reduce state bloat. Using previous example, you could store remote server address in Context
. If you think you don't need it (or your religion prevents you from using shared mutable data) just use Any?
(or Nothing
) and pass null
to Executor
.
- Context - type of shared data
- State - base class for all states
- Event - base class for all events
For conciseness I used C
, S
and E
and template (generic?) parameter names for Context
, State
and Event
respectively.
Examples
See basic example [here](doc/basic-example.md) and advanced example [here](doc/advanced-example.md).
Java interoperability
As all Kotlin libs it should just work, but I never tried. Plese do try and let me know.