Questions tagged [state-machine]
A state machine is a model for designing systems which change based upon their current state and what input they receive.
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Simple state machine
I tried implementing a state machine in C.
This is for a Stratosphere Balloon and I wanted to use a state machine to make it better.
This will be later implemented in ARM CMSIS.
The state function ...
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0answers
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define a lisp function, that takes fsm , a transition and state-index and return the state obtained by the transition from the state
The state machine has the below specifications
(defparameter *test-machine*
(make-fsm
:alphabet '(a b)
:table '((2 1) (0 2) (1 0))
:initial 0
:accepting '(2)))
...
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1answer
58 views
Sequence state machine
I tried to parse command line arguments. The program requires four arguments. I iterate over the arguments. If the argument is an option, I process the option. Otherwise the argument is one of the ...
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0answers
59 views
Self Running iterable state machine with Enums in Java
During development I needed to design a state machine with decision which runs to completion and performs state transition without the need to wait for events. So i come up with the following ...
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1answer
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Simple State Machine and Transition Table
The goal is to have well defined state transitions, and the ability to provide the next event to execute.
I'd like to know if this is a proper implementation of State Machine, considering how states ...
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Finite State Machine
I'm beginner in rust.
I would ask code review of my finite state machine.
Main feature :
static (event, state and transition)
support pushdown
It is the first step, second step is to use macro ...
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2answers
57 views
Scalable design of a system with multiple state machines, where valid state transitions depend on the state of other machines
This is a pretty huge question, however, I would appreciate it if you could just review the design and not my implementations of it. The Implementation and test sections could be ignored, they are ...
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0answers
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Simple Unity program for a research experiment
I'm developing a small C# Unity application to display stereoscopic images as part of a wider research study.
Since the experiment consists of unique stages (Start, during a trial, between trials, ...
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1answer
299 views
Toy Robot Simulator
I know this code worked as I've tested it with the case tests commented below in the code, and even added a few of my own, but the developers who were testing me came back with the following critiques:...
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1answer
98 views
Finite State Machine / Scene Manager in C
I'm new to C programming but this is my attempt at a Scene/State machine. I haven't had a code review before so I'm guessing this is gonna hurt :D
§ Preliminary
SceneFSM manages Scenes, one Scene "...
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0answers
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Lock-free state machine
I've written a lock-free state machine in go and I would love to receive some feedback on it.
Writing this library my main concerns are keeping it lock-free and very light-weight (no bells and ...
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3answers
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The parking machine implementation
I am interesting in the topic of finite automata, so I started over by implementing a parking machine from this video: Computers Without Memory - Computerphile to understand conceptions. Didn't do ...
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1answer
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Hardware Clock Divider
I have created a clock divider that works as follows:
If the division factor is 0, pass the clock through unchanged.
Otherwise, flip the output clock signal after the specified number of input clock ...
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5answers
277 views
Simple tokenizer v2 - reading all matching chars at once
I have rewritten my tokenizer according to most of the suggestions from the previous question here.
API
It now reads all chars as long as they match the pattern. I use three types of attributes to ...
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2answers
316 views
Simple tokenizer v1 - reading char by char
I was feeling like writing a new Uri parser. The previous one was too limited and wasn't able to parse the authority part. This one is also based on the pretty ...
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1answer
151 views
A Simplistic Finite State Machine Generator
I have designed a compile time Finite State Machine generator. I have chosen to use some of the features of C++17 such as parameter pack expansion, fold expressions and lambdas to keep the complexity ...
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2answers
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Extract lines under the specified heading
I wrote the following working code, which I just can't stomach:
...
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1answer
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State machine translates text into executable python code [v2]
A few days ago I started writing my own compiler-like program which has the goal to compile plain text into executable python code. After I let my first version review here, I made huge changes to the ...
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1answer
69 views
F# pattern matching to determine the state of a bank account based on past events
I am writing an event sourced system in which I need to have the state based on the events that already occurred for a given bank account.
The events are defined such as:
...
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1answer
203 views
Implementing Hangman using a State Pattern
I decided to implement a Hangman game using an object oriented State Pattern design. This is one of my first actual OOP as I normally write functional code.
Code use:
...
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2answers
274 views
Turing machine schoolwork
Our teacher doesn't give much feedback on our code itself. Was just looking for some feedback on how I could improve on this. This is the method that tests the string against the Turing machine that ...
3
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1answer
193 views
Finite state machine for chasing and attacking a target
My questions are:
How can I improve my implementation of the FSM model?
Should Finite State Machines have functionality for Adding and Removing states from table? (Since I can only be in one state at ...
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0answers
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Java UIState System
I am trying to come up with a UIState system that works well with Java UI. Before I show it I know I could add enums to help distinguish the states but I've left that out for simplicity. Here is what ...
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1answer
261 views
Designing yet another a state machine
I wanted to design a state machine with a few goals in mind:
Encapsulate state logic within individual classes to keep them decoupled. (I'm very curious what the community thinks about this in ...
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1answer
199 views
Scheme: FSM substring search
I have been working on a function that return a FSM that searches a specific word based on the argument of the constructor. The idea was to use those routines as means to learn about regular ...
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1answer
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C++ CLI Console Menu Statemachine
I am trying to find the best way(/most efficent way) to setup my console program's menu. The way I have it set up is that I have a Menu class and then I use a menu pointer called currentMenu and I ...
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3answers
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Finite State Machine in C++
I made a state machine.
You can press 0 and 1 to switch between the hypothetical menu and playing state.
I hope you can help me improve it further.
StateManager.h
...
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0answers
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static macro-based State Machine implementation
While learning Rust for the past couple of weeks, I set out to use the type-system to build a static State Machine implementation in Rust.
The goals:
program in idiomatic Rust
no runtime overhead
...
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21 Game (Nim) as Finite State Machine in Python
Feedback from previous posts of mine suggested that my approach to states was haphazard, which is not surprising since I hadn't really thought of games in terms of states before. I have since gone off ...
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2answers
309 views
Finite state automata
This is a non-deterministic finite state automata (NFA) meant to be used with a Regex engine. To show some example usage, suppose you wanted to construct an NFA for the regex ...
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0answers
673 views
Finite Automata stub in Rust
I wrote a finite automata implementation in C years ago. C's access to mutable, unsafe, raw pointers made it quite simple for me to link/relink the states of a finite automata.
I read the official ...
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0answers
85 views
Finite State Machine to segment Thai syllables
I am developing a FSM to segment Thai syllables with the following rules:
Here are my util functions:
...
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1answer
609 views
Implement a Finite State Machine in ES6 [closed]
I have built a simple finite state machine that models an even simpler fictitious bank account system.
Any given account can be in one of three states at any time: Open, Closed, or Held.
I have a ...
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1answer
186 views
Push Down Automaton to detect RNA hairpins
For one of my assignments I am supposed to write a Push Down Automaton. It's supposed to receive a string that has to be checked if it's an RNA Hairpin.
For example: gacgcaaguc would be one, since ...
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3 state switch for a table sort
I have a data table with 7 columns. The first column is the index that increases from 1 to N and is considered to be in ascending order by default. The remaining columns are unsorted. I need to be ...
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Knuth Morris Pratt substring search algorithm
Below you can find a Kotlin based implementation of the Knuth-Morris-Pratt substring search algorithm.
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1answer
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Python coroutine structure
I've completed Advent of Code's Day 9 in Python3, trying to use it to teach myself coroutines. I'm very familiar with generators, but I've pretty much never used coroutines before.
I've ended up with ...
2
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1answer
238 views
Simple state machine based command-line argument parser
I'm in the process of learning to write idiomatic JavaScript code so naturally I'm parsing command line arguments.
My approach to this is to have a simple state machine. The parser should work as ...
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0answers
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“Academic interest” implementation of a Finite State Machine
Context
I'm playing around the concept of a Finite State Machine. While I understand the basic principles behind it, I want to implement a simple, yet generic class which could be reused in the ...
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2answers
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DFA creation from string
I have fairly simple Python 3 code that creates a DFA from a string.
It works great, but I believe it can be made more efficient. There are a total of 3 loops:
First iterates over the string
Second ...
4
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1answer
637 views
Mars Rover problem in J
I've written an implementation of the "famous" Mars Rover simulation, (another question on this) whose problem statement is this:
The first line of input is the upper-right coordinates of ...
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1answer
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2answers
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Alternative to nonlocal for local variables in a function with nested functions in Python
Introduction for future readers
I posted the code below in the hope that it would be a good example to discuss
the topic "Alternative to nonlocal for local variables in a function with nested
...
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0answers
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Time-dependent state machine with two outputs
Given a class BasicDataFeed whose purpose is to feed questions and answers into an artificial neural network, which is tested in a non-negotiable manner as follows:
...
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2answers
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Very simple finite state machine
I have beginner knowledge of C++ and using that and some self dummy design I came up with the above implementation. The FiniteStateMachine here first asks for the ...
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1answer
927 views
Tennis-Refactoring-Kata through OOP
I was trying to solve Tennis-Refactoring-Kata. This seems quite hard at startup but, through use os OOP it can be deeply refactoring using just a single if.
My ...
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0answers
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Character-based transitions (part of a lexer)
As part of my prep for the Code Review community-challenge (which looks like it will be Write your own programming language), I've been working on an LL(1) lexer generator in Rust.
Yes, lexer ...
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2answers
159 views
Stateful implementation of TicTacToe
I made a TicTacToe implementation using State pattern in Java. I was wondering if this could ...
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1answer
250 views
Regex to DFA parser in Dart
I've created a Regex to DFA parser, using Thompson's construction algorithm and epsilon-reduction. Here is the code:
builtins.dart:
...
5
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1answer
425 views
Designing posts: state machine
In the Object-Oriented Design Pattern Implementation chapter of the second edition of The Rust Programming Language, the basic code structure is given and it suggests trying to add features:
This ...
