Questions tagged [ruby]
Ruby is a multi-platform, open-source, dynamic, object-oriented, interpreted language created by Yukihiro Matsumoto (Matz) in 1993.
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Esoteric programming language in Ruby
I have recently created an esoteric programming language called 01 and I will be grateful for a code review and any opinions or suggestions about the future of this language.
GitHub
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Download a Git repo without .git folder
Coming from Python, JavaScript and PHP, I'd like to learn to write Ruby in the way it's "supposed to". Well-written Python code is called "Pythonic", so I'd like to know how idiomatic my Ruby code is.
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1answer
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Arrays of hashes to hash
Task: convert this array of hashes:
animals = [
{"cats" => 3},
{"dogs" => 5 }
]
to this hash:
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Class to create and send a PDF form with attached documents
I'm currently working on building a class to create a PDF form application with attached documents and sending that file to an endpoint in Box Api. I have found extremely difficult managing ...
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1answer
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Updating one model field based on the associated model's field
I'm wondering if there is any way we can optimize the following code.
Scenario is Library's active field should be ...
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0answers
30 views
XLSX to CSV script with column re-ordering
I am still learning Ruby and object oriented programming.
I wrote an Excel Export CSV Parser script, which does the following:
reads an XLSX file
creates a temp file
re-orders columns
generates a ...
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0answers
43 views
Ruby Ceasar Cipher program [closed]
I made a Ceasar Cipher program asked by The Odin Project here. I would like Ruby developers to provide comments and opinions on it.
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24 views
Gomoku Game in Ruby
I learnt lots about ruby from my last post Game of Life in Ruby, so I have my next try in Ruby, it is Gomoku.
It is still an console game and I use three classes ...
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1answer
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Scheduled file sorting with Ruby
I have a script running as an hourly cron job. It finds all screenshots on the Desktop and moves them to directories sorted by year/month/day.
On MacOS, screenshots are automatically saved to the ...
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1answer
67 views
Ruby on Rails quiz function
I have created a quiz function in my rails application. Since I want to track responses and make it a server-side application I created a table to record the responses of the questions people answer.
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5
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1answer
123 views
Game of Life in Ruby
I think Ruby is kinda interesting, so did this Game of life implement in Ruby. I am wonder is there is some magic in Ruby can let my code more elegant.
I am a python coder and I think my Ruby kinda ...
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0answers
34 views
Use of inheritance using two Ruby libraries
Currently I'm working on parsing data from a form service into a pdf form. I created 2 classes one inheriting from the other one. However, I see that the classes I created are growing in lines of ...
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1answer
36 views
Non-recursive factorial in Ruby
I've implemented a factorial function in a more "Ruby" way. I would like to get feedback on the algorithm.
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TDD for Ruby On Rails API for group event items
I found myself working in this coding exercise for a work offer. I tried to apply TDD in the process but I didn't get any feedback from the company and I really would like to know what can be improved ...
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0answers
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A Ruby on Rails controller and JS code to add labels to products, like Gmail's labeling tool
My friend asked me to write a tool that lets users bulk add/edit labels (taxons) to store (spree commerce) products.
I came up with this, curious to know if you guys find the code readable/...
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1answer
41 views
Showing a message when the column is true
I'm making an app using Rails. I have 4 Boolean columns in a table like below, and I want to show a message if that column is true.
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2
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1answer
26 views
Offset vs Cursor Pagination
I am trying to compare any performance gain(s) from moving a current offset-based pagination endpoint to a cursor based one.
I have the following ruby code:
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2answers
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Knapsack class in Ruby
This is a simple implementation of a knapsack written in Ruby. I've included all the relevant code here, but my question is concerning the contents setter ...
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2answers
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1answer
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case…when or Hash#fetch [closed]
I have the following method, which can be written in the following two ways: which one would you prefer, and why?
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2answers
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Whiteboarding - Multiply all values in array except at the index for each
Consider this interview question:
You have an array of integers, and for each index you want to find the
product of every integer except the integer at that index.
Write a method ...
2
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1answer
67 views
Rails thin controller method to change account plan and fire slack message via a service object
I'm a beginner with Rails and am trying to figure out how to keep my controllers clean and thin, and how to work with service objects. I am building an internal tool to manage our SaaS customers, and ...
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1answer
45 views
Efficiently determining maximum allowed euclidean distance between lists of colors
I was recently tasked with determining which hex RGB colors in list color_list are nearest to each hex RGB color in list target_colors, using euclidean distance as the measuring stick, and only ...
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0answers
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Ruby - Create a bitmap editor that accepts user input to plot a matrix grid, points and lines
I recently didn't pass a take-home code test for a job interview - and one of the reasons for this was that the code was not as idiomatic as it could be.
The premise is in the title - but below ...
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1answer
30 views
Pyramid of doom Grape endpoints
I'm creating an API endpoint to create and delete associations, essential creating and deleting records of a join model.
The code below doesn't seem idiomatic or pragmatic at all. What's the best way ...
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1answer
71 views
Short Ruby program that opens a random video file from a directory
I am currently learning to code in ruby. I have created a small program that iterates through a directory of video files and opens one at random. The program is fully functioning (with the odd issue). ...
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1answer
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2answers
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Boggle board solver in Ruby
The following is my attempt at creating a Boggle board solver in Ruby. It's not especially fast. I would love to have input on how the solution can either be sped up, or whether a different algorithm ...
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0answers
55 views
Script to auto-generate Markdown tables of content
I would greatly appreciate feedback on the enclosed script, which auto-generates a Markdown table of contents for Github-flavoured Markdown, with respect to:
Consistency with Ruby idiom & style
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2answers
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Modelling football teams and fixtures in Ruby (as compared to SQL)
I am trying to model information around football teams and fixtures. I am using the Premier League fantasy football API for my data. The fixtures API is here, and the team data (along with a lot of ...
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0answers
36 views
Simple ruby program for AWS ruby SDK
I wrote a simple ruby program for interacting with one of my temporary AWS S3 using Ruby SDK. Below is the program I've written. Since I learned ruby by myself I need help/suggestions in following ...
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0answers
82 views
Drawing an ASCII grid in Ruby based on a 2D array
I'm writing a function that renders a grid using ASCII line-drawing characters, based on a provided 2D array (or array of arrays), with each top-level array representing a row, and the items inside ...
2
votes
1answer
170 views
RuboCop: parameter list too long in initialize method
I have an initialize method for a class that looks like this:
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3
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1answer
82 views
A Ruby script to generate random “people”
I'm working on developing a small Ruby program to generate random data for a Neo4J database, including people, addresses, phone numbers, etc.
I'm a total beginner to Ruby, so I wanted to post my ...
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1answer
29 views
Ensure that a Sinatra hash always has a valid value
I'm trying to ensure that a Sinatra hash always has a valid value.
Is there a more-concise way to write this?
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3
votes
0answers
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Implementing secure API for use between other internal apps
My team and I are trying to implement a secure API and would appreciate some feedback on the following:
If there are areas of improvement in the current code to improve security
Recommendations on ...
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1answer
58 views
Creating an associated object on create/update
My app is setup where there are musical artists and albums have message boards through a has_one polymorphic association.
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Retrieving data from the movie database
I am trying to retrieve the series, seasons and episodes from the movie database, however I am pretty new to Ruby on rails and I feel like what I am doing could be improved a lot.
I use an ...
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Ruby Hash to XML
I've just made this "serialization" module in Ruby that takes a hash and outputs a XML string.
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2answers
194 views
Calculate Hamming distance between DNA sequences in Ruby
I am requesting a review for my solution to this problem from exercism.io. I'm posting it here since there is not always input on solution submitted through exercism.
The problem is as stated:
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votes
2answers
104 views
Rails controller for a vocabulary quiz
I'm new to refactoring and I have just refactored an old Rails project that had bloated controller methods.
I spun off the bloated methods into its own separate controller following this logic, since ...
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0answers
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Creating join table entries based on different connection ids
My controller code is:
I'm using callbacks to find @lead.
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0answers
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Grab and kill AMQP subscriber
I am using amqp client in order to get data. I am using sidekiq jobs in order to make sure that client is always connected and getting data.
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2answers
45 views
Distinguishing between people who have likes to posts and those who have dislikes
I want to distinguish between people who have likes to posts and those who have dislikes. I want to find a way to improve my code without thinking it is efficient.
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2answers
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URL Routing Application
In a Ruby on Rails application I want to have this routing:
for URL www.example.com/reports go to controller documents and action ...
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2answers
178 views
Ruby on Rails application controller
My application controller keeps growing with small helper methods that I use in both my controller and views, is it okay? or what do you recommend doing?
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0answers
120 views
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1answer
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Ruby Regex to update various variables inside a file
In our applications we have a version file that has three variables that are then joined to create a string that can be used for the semantic version.
The file looks like:
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0answers
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Counting how many questions in each category are tagged
I have a homepage that shows how many questions are in a certain category which is done through tagging. The functionality is working great, it tells me how many of each there are.
However, newrelic'...
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Rails db query to pull joined and included data
I have a conversations controller which is used to pull all the conversations for a user of type seller.
Sellers can have <...
