Questions about Ruby, dynamic, reflective, general-purpose object-oriented programming language that combines syntax inspired by Perl with Smalltalk-like features.

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2
votes
1answer
131 views

How to create html pages which don't change very much and not very often?

I have a Rails server that connects to a json API on another server to get data to build the pages dynamically. These pages, however, don't change very much and not very often. I was thinking I could ...
1
vote
0answers
30 views

Should I refactor a F class from code climate? [duplicate]

According to code climate, a class is F, aka the worst mark you could be granted. I did submit a pull request to rearrange it here Which has been refused because the new code is supposedly too ...
1
vote
1answer
101 views

Should I use the new method/action to retrieve records? (Rails)

I have an admin controller that is just used for its index action which renders a view with the most recent updates to certain resources: class AdminController < ApplicationController ...
-1
votes
2answers
202 views

Programming beginner: Options for small program interfaces? [closed]

I have been a Rails developer for a year now, and I really want to start diving in to Ruby and pure programming without using a framework. However I am having trouble conceptualizing little programs I ...
3
votes
3answers
199 views

Is there a reason for the crossover from the Ruby community to the Clojure Community?

When we look at the the overlap between the Ruby Community - we see the following overlaps: Think Relevance (now Cognitect) has switched from Ruby to Clojure Jay Fields has switched from Ruby to ...
0
votes
2answers
283 views

help me understand Rails and attributes as class methods

This is from the Hartl Rails tutorial. We are automatically logging in a user in the process of creating that user with a callback to #create_remember_token. It works great but there are some things, ...
4
votes
2answers
400 views

Is using static-typing the solution to domain-driven design and decreasing the number of errors?

We are using PHP (a dynamically-typed language) in our project. However, I have found my colleagues asking questions such as ...
1
vote
3answers
291 views

How do I set up pairing email addresses?

Our team uses the Ruby gem hitch to manage pairing. You set it up with a group email address (e.g. dev@mycompany.com) and then tell it who is pairing: $ hitch james tiffany Hitch then sets your Git ...
4
votes
1answer
635 views

Is there a representation for mixins or traits on UML?

Is there a representation for modern programming constructs that are becoming common in modern OOP/hybrid languages like mixins/traits/categories/partial classes ?
0
votes
1answer
166 views

Refactoring this code that produces a reverse-lookup hash from another hash

This code is based on the idea of a Form Object http://blog.codeclimate.com/blog/2012/10/17/7-ways-to-decompose-fat-activerecord-models/ (see #3 if unfamiliar with the concept). My actual code in ...
1
vote
1answer
298 views

How to build an API on top of an existing Rails app with NodeJs and what architecture to use? [closed]

The explanation I was recently hired by a company that has an old RoR 2.3 application with more than 100k users, a strong SEO strategy with more than 170k indexed urls, native android and ios ...
1
vote
1answer
118 views

Inherit one instance variable from the global scope

I'm using Curses to create a command line GUI with Ruby. Everything's going well, but I have hit a slight snag. I don't think Curses knowledge (esoteric to be fair) is required to answer this ...
3
votes
2answers
3k views

Ruby - when to use instance variables vs parameters between methods?

I'm writing several methods that call other methods. To pass the information I have a couple of choices: Pass the information as parameters Set instance variables so that other methods can access ...
2
votes
1answer
463 views

Rails: Useful example of delegate and Law of Demeter

I am currently learning about delegate and the Law of Demeter. I understand the Law of Demeter, but I can't seem to find a good example of where using delegate to avoid breaking the law would actually ...
4
votes
2answers
605 views

Why does Clojure neglect the uniform access principle?

My background is Ruby, C#, JavaScript and Java. And now I'm learning Clojure. What makes me feel uncomfortable about the later is that idiomatic Clojure seems to neglect the Uniform access principle ...
3
votes
2answers
394 views

Why does assigning a variable to false return false?

Why does: something = false always return false? Since it is an assignment and not a comparison, it seems it would make more sense to return the result (success/failure) of the assignment (like ...
3
votes
1answer
412 views

What do goroutines, Ruby Fibers, etc. look like to the OS/Kernel?

In process concurrency and thread concurrency it's quite obvious how the kernel sees these as they map directly to real things that the kernel manages. When it comes to Golang goroutines and Ruby ...
0
votes
1answer
798 views

Use ruby's array sort() method, or add items in correct place with a binary lookup?

If I am loading a whole load of items (un-ordered words from a file or something) would it be more efficient to load them all to a Ruby array, and then use the built in sort! method or to do a binary ...
2
votes
1answer
207 views

Designing and refactoring of payment logic [closed]

Im currently working on an application that helps users to coordinate dinner clubs and all related accounting. (A dinner club is where people in a group, take turns to cook for the rest and then you ...
8
votes
1answer
5k views

Why did Microsoft abandon IronRuby and IronPython? [closed]

Several years ago, Microsoft announced that Ruby and Python were coming to .net. The projects were called IronRuby and IronPython, respectively. Microsoft said that the projects would be built on ...
1
vote
4answers
231 views

Until what point should I refactor? [duplicate]

What do you think until what point should a programmer refactor the code? Basically having def method do_something end Pieces of code would be handy, but they increase spaghetti code until the ...
4
votes
3answers
2k views

How can web development bootcamps deliver on their promise? [closed]

I came across the concept of web development bootcamps, these 9-10 week intensive crash courses claim to teach beginners web development and help them get 80k starting salary jobs. Many of you might ...
2
votes
1answer
120 views

Storing different algorithms and using them for demonstration

I have an app for creating simple graphs (the kind with vertices and edges) and then using different algorithms on them (BFS, DFS, topsort, Prim's etc) for demonstrating how they work. I'm now ...
2
votes
2answers
100 views

Should I put the datatype of a class attribute in its name?

Most of my system's class attributes are just text, but in this case it makes more sense to place this particular class's attributes into one single hash (from a "keep the source code pretty" aspect). ...
7
votes
2answers
1k views

Is it considered bad practice to compile into Javascript as a matter of language preference? [closed]

I understand that compiling into Javascript is sometimes necessary and even in some cases results in a faster application. However I'm wondering if compiling into Javascript, for building web ...
1
vote
4answers
241 views

Efficient way of evaluating an array of strings then add to an array in Ruby

I am looking for an efficient way of evaluating an array of strings against a series of rules and then adding them to another array. For example I have an array of strings: something a 1234 #gohere ...
1
vote
2answers
491 views

Ruby: Multithreading a CSV with output

I have a script written in Ruby that has maxed out a core in my server's Xeon processor for the last 2 hours. Since it's currently only using 1 of four possible cores, I want to try and rewrite the ...
2
votes
2answers
14k views

What should I learn to be backend web developer? [closed]

I want to be a web developer and because I don't want to get into designing (and stuff like that) so I thought I should become a backend developer (also more suited because of my course i.e. b.tech in ...
2
votes
3answers
700 views

What to use in UML for included module in ruby?

I like to create simple class diagrams for my projects. Most of the time I just use composition, inheritence and associations. IMB's basic UML resource tells all about this. However I'm using ruby so ...
3
votes
1answer
289 views

How do I test this?

I've attempted test first in Ruby on Rails using Test Unit and RSpec. I'm wondering how to do test first in situations that are more closely tied to the OS/filesystem. Problem: Building a USB stick ...
2
votes
3answers
473 views

Is the Observer pattern adequate for this kind of scenario?

I'm creating a simple game development framework with Ruby. There is a node system. A node is a game entity, and it has position. It can have children nodes (and one parent node). Children are always ...
6
votes
3answers
314 views

Is there any situation in which it would be appropriate to use unless… else?

This construction is considered wrong unless #.. else #.. end This is for the general reason of double-negative confusions. It translates to: if not #.. if not not #.. end We all agree ...
1
vote
1answer
620 views

ruby-idiomatic hashes vs arrays

So I am still fairly new to ruby, though I have noticed that it is very hard to create 2d-array and that hashes seem to be more of the go to data structure than arrays. I was wondering why the Ruby ...
2
votes
1answer
155 views

How do I know when should I package my classes in Ruby?

In Ruby, I'm creating a small game development framework. Just some personal project - a very small group of friends helping. Now I am in need of handling geometric concepts. Rectangles, Circles, ...
0
votes
1answer
277 views

Algorithms for Data Redundancy and Failover for distributed storage system?

I'm building a distributed storage system that works with different storage sizes. For instance, my storage devices have sizes of 50GB, 70GB, 150GB, 250GB, 1000GB, 5 storage systems in one system. My ...
-2
votes
4answers
2k views

What can I do with Ruby beside RoR? [closed]

Beside RoR, what do people use Ruby for? Is there any use for Ruby on Windows platform? If you use ruby for scripting why not use Bash or Powershell?
7
votes
2answers
256 views

How to share control of links/domains on an open source project with many collaborators?

I'm trying to help the Rebol project re-engineer its web presence now that it is open source as Apache 2 — after nearly two decades of proprietary license! The language's creator currently has ...
1
vote
0answers
114 views

How do I test my non-Ruby website using Ruby?

I would like to build some Ruby tests to test my non-Ruby website. I love the Ruby testing tools (webrat, capybara, etc.) but they seem to be targeted to testing local sites. How can I use these ...
2
votes
1answer
162 views

How do I distinguish between things belonging to the standard library, specific gems, and those that are user-generated in Ruby?

I'm a beginning programmer, that for various reasons is using an existing Ruby codebase to learn to program. My goal is to be able to understand and eventually extend this codebase. However, I find it ...
0
votes
2answers
184 views

Why there is much more support for closed xls format in rails (and ruby) than to an open ods format?

It is little depressive, but it seems to me that there is much more support for manipulating ugly proprietary closed format like xls in rails (and ruby) in general that to documented open Open ...
0
votes
1answer
379 views

Benefits of using XML builder vs templating language like ERB?

I'm doing a lot of work with XML, our legacy XML generators use the ruby template language ERB to create the XML files. I've been experimenting with Nokogiri and the builder model of creating XML, but ...
4
votes
1answer
175 views

Order collisions in ecommerce

Suppose I have a web app where sellers add their products and set them as available for sale. Then I show a list of products in my mobile app, where I get products via my REST API. My problem: suppose ...
0
votes
3answers
847 views

Why would you want to use an array, or hash as hash key in ruby?

i'm using Ruby 1.9.3 I figured out that you can use an array, or a hash as hash key in ruby: h = Hash.new h[Array.new] = "Why?" h[Array.new] # Output: "Why?" h[Hash.new] = "It doesn't make sense" ...
3
votes
2answers
350 views

Getting practicality of PHP from Ruby or Python

I have a rather odd problem. I love the practicality of PHP - specifically that I can fairly safely assume that on any random server I'll have access to the MySQL libraries, and that I can go between ...
1
vote
1answer
4k views

Why does gmail use java? Is there really a advantage over something like php or python? [closed]

Note: I know that none of you (probably) work for google, so this is a lot more of a conceptual question. So yeah, i discovered that Gmail uses java and that got me thinking, Why? I personally never ...
1
vote
3answers
404 views

Is there any situation when there's no alternative to instanceof?

It seems to me that instanceof comes from the land of functional programming and is a watered down version of pattern matching and that the OO altenative to it should be dynamic dispatching. In OO ...
3
votes
1answer
641 views

Is it possible to write a code without class methods, globals, and class variables? [closed]

I'm designing my own programming language for fun, and I'm thinking of making it fully Object-oriented (no statics, no globals, no class variables, no class methods), so I need to find a way to ...
2
votes
1answer
384 views

How does dependency inversion principle work in languages without interfaces?

In C#/Java, the dependency inversion principle is often demonstrated by high-level classes that depends on an interface/abstraction (that it owns). Low-level classes will implement the interface, thus ...
2
votes
1answer
290 views

Attempt at understanding the double-dispatch pattern

I've been trying to grok the double-dispatch pattern and having a hard time. I finally attempted a sample program to help myself understand. Here's the gist. But then I decided to attempt it without ...
0
votes
0answers
330 views

Online stores service design [duplicate]

I am designing an online store service app with rails. Everyone who wants to make his/her own store can do it with this app by just signing up and choosing a domain. I want to make it as SaaS as it ...