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

learn more… | top users | synonyms

1
vote
2answers
121 views

Cataloging events, projects and tasks: Is SQL appropriate?

I have this idea for a database: it would hold everything I "need to remember", and allow future coding projects to access the information. These future projects include a day-planner and historical ...
2
votes
1answer
144 views

How to identify a PDF classification problem?

We are crawling and downloading lots of companies' PDFs and trying to pick out the ones that are Annual Reports. Such reports can be downloaded from most companies' investor-relations pages. The PDFs ...
1
vote
1answer
268 views

Ruby using the Gosu framework: why it runs slow first time?

I'm creating a Ruby game using the Gosu framework. All good. Sometimes, when I run the game, it has some kind of slow startup, and probably it will be rather slow during the whole game. So I close it ...
1
vote
4answers
298 views

If I use Ruby Migrations, do I have to use the rest of Ruby on Rails?

I'm currently trying to come up with a database migrations strategy for my organization. This includes getting the database scripts into source control, managing versioning, managing releases to QA / ...
1
vote
1answer
896 views

When to use mixins in Ruby

I am wondering when to use mixins? I have read about them. Many authors compare them to interfaces, abstract classes, etc. Mixins are modules that are mixed-in and modules are a way to group similar ...
-1
votes
1answer
1k views

What is the difference between class level attributes, Class constants and singleton methods?

What the difference given they all exist 'once per class'. When should I use one over another, i.e. for what purpose? I use Ruby.
1
vote
1answer
853 views

rails fake data, considering switch from faker to forgery, any advantages or pitfalls?

With Ruby on Rails I've usually used Forgery for generating dummy data for testing. I've noticed recently that several clients and tutorials are using Faker They both seem fairly similar in use ...
5
votes
1answer
1k views

Is the puts function of ruby a method of an object?

I'm trying to understand how the puts function fits in Ruby's "Everything is an object" stance. Is puts is the method of a somehow hidden class/object? Or is it a free-floating method, with no ...
32
votes
5answers
15k views

Return random `list` item by its `weight`

I have, for example, this table +-----------------+ | fruit | weight | +-----------------+ | apple | 4 | | orange | 2 | | lemon | 1 | +-----------------+ I need to return random ...
3
votes
1answer
173 views

Rails solution for mobile-specific content filter?

To note, I'm not interested in simply 'hiding' content for mobile devices, I want to filter out that content completely. I'm also not trying to address the issue by building a mobile specific ...
1
vote
3answers
1k views

Backtracking with Killer Sudoku

I'm developing a Killer Sudoku solver for a school project. I've programmed 10 human strategies showing what they are doing in order to be the most educational possible. It can solve hard Killer ...
1
vote
2answers
453 views

Ruby workflow in Windows

I've done some searching and quite haven't come across the answer I am looking for. I do not think this is a duplicate of this question. I believe Windows could be a suitable development environment ...
1
vote
4answers
140 views

Depend on built technology, or build your own [duplicate]

Possible Duplicate: How to decide between using an existing eCommerce solution and building your own? I am starting a ecomm business and my site idea is pretty similar in functionality to ETSY....
12
votes
5answers
4k views

Is monkeypatching considered good programming practice?

I've been under impression, that monkeypatching is more in quick and dirty hack category, rather than standard, good programming practice. While I'd used from time to time to fix minor issues with 3rd ...
3
votes
3answers
667 views

Why rails use yaml to config database instead of plain ruby code?

Most of configuration files in ruby such as Gemfile, gemspec, are just ruby code itself. Why database configuration file in rails is the exception?
16
votes
2answers
3k views

How does using a LGPL gem affect my MIT licensed application?

I am developing an open source ruby application under the MIT license. I am using this license because I don't want to place any restrictions on the users of the application. Also I can actually ...
6
votes
1answer
2k views

Ruby Shoes for non-trivial apps [closed]

I've been taking a look at Ruby Shoes for GUI development with Ruby. So far, it's been a pretty good experience for making simple apps. However, I am quite worried about being able to write large ...
0
votes
0answers
203 views

Rails Book Suggestions [duplicate]

Possible Duplicate: Is there a canonical book on Ruby on Rails? I'm looking to learn Ruby on Rails. I already have a small background in Ruby and don't really need a book that covers both, as ...
18
votes
3answers
1k views

Moving away from .Net to Ruby and coping without intellisense [closed]

I am in the process of trying to learn Ruby, however after spending nearly 10 years in the MS stack I am struggling to get by without intellisense. I've given RubyMine a try which does help however ...
12
votes
4answers
2k views

What did Ruby do right (or was it Rails)? [closed]

Most programming languages have some design decisions that influence their usage and applicability. For example: Python focused on maintainability/readability of code and had indentation be a part ...
93
votes
9answers
59k views

Why is Python used for high-performance/scientific computing (but Ruby isn't)?

There's a quote from a PyCon 2011 talk that goes: At least in our shop (Argonne National Laboratory) we have three accepted languages for scientific computing. In this order they are C/C++, ...
6
votes
4answers
529 views

I have a bad memory. Is dynamic typing language+vim appropriate for me? [closed]

I am switching from C#+Visual Studio to Ruby+Vim for a few months. The only thing that I am missing from C#/Visual Studio is intellisense, especially when I have a new ruby gem to familiarize. As a ...
4
votes
2answers
314 views

How to deal with variables when extracting methods in to smaller methods?

This is an abstract question to clarify a refactoring concept in the ruby language. Assume in the real world that there would be many more variables and method in the Furniture Class and Refinish ...
1
vote
4answers
666 views

Should a novice programmer learn several languages at once? [duplicate]

Possible Duplicate: Is it worth being computer languages polyglot? I am half way through my first year at university studying computer science. I have been learning Java on the course and also ...
6
votes
3answers
508 views

Generalized VS Specialized technical solution; what to take into account?

We recently had a discussion in the office because of conflicting views between developers. One side (side S) argued technical solutions -generally- need to be a specific as possible, while the other ...
4
votes
2answers
2k views

How to match responses from a server with their corresponding requests?

There is a server that responds to requests on a socket. The client has functions to emit requests and functions to handle responses from the server. The problem is that the request sending function ...
3
votes
2answers
294 views

Managing constants in application

Our application is having 2 parts a web app running ROR and a web service running Sinatra. The application communicates with the mobile device for which we use different constants depending on the ...
7
votes
3answers
2k views

Help understanding server-side scripting

As far as I understand, there are basically 3 options for doing server-side scripting these days: Using scripting languages that can be directly interpreted/executed by the web server (e.g., PHP and ...
24
votes
3answers
7k views

What functionality does WebStorm contain which RubyMine does not?

I am looking at buying Rubymine as I am doing a small amount of ruby, but a large amount of html5/javascript. I was going to get Webstorm as I do have a lot of pure html5/js based frameworks/apps ...
8
votes
1answer
897 views

What's the best way to learn nature-inspired algorithms? [closed]

I completed the Machine Learning course (Stanford) and got very interested, also after some research, I decided that I'd like to learn nature-inspired algorithms. I've found some resources like: ...
6
votes
2answers
8k views

Why do people suggest not to use instance variable for views in Ruby on Rails

Why do I hear that it is not good to share instance variables between controllers and views. I kind of like it because I can see immediately via the @ that something is coming from the controller. I ...
10
votes
3answers
6k views

Can I use Ruby to automate everything?

I face various types of applications (web-based, GUI-based, command-line, etc.) on various platforms (Windows, Linux, etc.) to operate everyday. There is a great opportunity for me to automate tasks ...
5
votes
5answers
2k views

What is a practical way to debug Rails?

I get the impression that in practice, debuggers are rarely used for Rails applications. (Likewise for other Ruby apps, as well as Python.) We can compare this to the usual practice for Java or ...
1
vote
3answers
1k views

Rails generators for subscription and payment processing services?

I've been thinking about making a generator for managing subscriptions with options for a couple different payment processing services, it is something that I would use. Are there any existing ...
2
votes
1answer
367 views

Are Blocks Second-Class Citizens in Objective-C (vs. Ruby)?

Feeling slightly witty the other day, I wrote an eachWithIndex: method in a NSArray category. It has a typedef like this: typedef void (^processItem)(id item, int index); and the method looks like ...
5
votes
3answers
754 views

Distributed transactions and queues, ruby, erlang

I have a problem that involves several machines, message queues, and transactions. So for example a user clicks on a web page, the click sends a message to another machine which adds a payment to the ...
-2
votes
1answer
206 views

Is it possible to access .NET APIs with JRuby? [closed]

I know that JRuby can access COM APIs, but can it interface with .NET?
7
votes
5answers
713 views

Ruby isn't a PHP generator, right? [closed]

My boss was looking down on me about learning Ruby because "It's just a PHP generator" which I can't find anything about it being so. Is this the case? I understand that the Rails framework can be ...
3
votes
3answers
794 views

API Development - Sinatra?

I've been tasked to create a mobile application as well as an accompanying website. Both the application and website will interact with the same database. To make things easy, I figure creating an API ...
13
votes
2answers
472 views

How to handle technological “Dogmatism”

I left a job (to relocate to another country) where I programmed in Javascript and Haskell (some python) most of the time. I really liked it because people were objective, positive, mathematical, and ...
2
votes
1answer
156 views

What comes first, the ruby chicken or the homebrew egg?

Whilst installing Ruby on OsX I noticed I could do so by using a package manager called Homebrew. This seemed like an easy option, so I took it. Everything worked smoothly. Life was good. Being a ...
24
votes
8answers
13k views

Ruby on Rails downsides and caveats [closed]

This is not an opening gambit for RoR bashing - honest! I'm learning Ruby and the Rails framework. Prima facie it appears to be pretty cool, and a wonderful experience compared to PHP. (In fact, it's ...
1
vote
1answer
108 views

can we do scaling by throwing ruby stone

I heard developers at my office discussing Ruby language can be used for following purposes: Desktop apps,Web Apps,and may be handheld devices. Actually,we are in phase of selecting technology to have ...
3
votes
3answers
4k views

Ruby IDE code completion [closed]

I just started writing some ruby in my spare time and am currently using Netbeans 7 with the Ruby and Rails plugin v0.111. I'm primarily a Java programmer coming from IntelliJ and Eclipse. One ...
2
votes
3answers
1k views

Which framework should a ruby beginner start with: rails or sinatra? [closed]

What is the best framework for start: rails or sinatra? I heard that sinatra is more flexible but rails has a lot of documentation and tutorials. What's your choice?
0
votes
2answers
490 views

Do I need an equivalent for MAMP to work as a Ruby Server?

I am just starting to learn Ruby, and I want to do something that required a DB but I'm unsure whether MAMP would work or do I need something else?
0
votes
1answer
184 views

Whole Solution Complexity … vs Development Complexity

I am generally a PHP Developer that deals in a few different MVC frameworks. I am being tempted (like most) to break out of my comfortable LAMP environment in pursuit of a "prettier" and "more simple"...
10
votes
6answers
949 views

Interviewing a developer who's skilled in a language you don't know [duplicate]

Background: I'm an experienced developer and technical architect (C#, Delphi, Java, Clojure, Assembler, Perl, various esoteric functional programming languages) We need to hire some Ruby developers ...
30
votes
4answers
3k views

Concrete examples of Python's “only one way to do it” maxim [closed]

I am learning Python and am intrigued by the following point in PEP 20 The Zen of Python: There should be one-- and preferably only one --obvious way to do it. Although that way may not be ...
3
votes
3answers
750 views

Do mixins create coupling with Ruby?

Let's say I have the following architecture: module Keyring @keyring = Keyring.new class Keyring def key def add_key def update_key def remove_key class ...