Questions about Ruby, dynamic, reflective, general-purpose object-oriented programming language that combines syntax inspired by Perl with Smalltalk-like features.
0
votes
2answers
56 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
0answers
19 views
Learning data wrangling in Ruby using a specific codebase?
Boundaries of the problem
I am in the position where I need to attain programming skills in a specific domain: data wrangling. Due to practical reasons, I am working with two limitations: a) I will ...
0
votes
1answer
42 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 ...
-1
votes
1answer
63 views
Using Rails with a NoSQL database [closed]
I'm planning on creating a Rails site that is backed by a NoSQL database (DynamoDB). Admittedly, I'm no expert in Rails however this immediately seems to go against conventional Rails configurations ...
3
votes
1answer
103 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
102 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"
...
-1
votes
0answers
184 views
Is there a reputation that C# and Java is for work while Ruby or Python is for fun? Why? [closed]
I heard this several times online or from colleagues. Many people use C# or Java at work-related project, but prefers Ruby or Python for fun or hobby-oriented projects. For example, in his blog post, ...
0
votes
0answers
6 views
How can I capture data using regular expressions in Ruby? [closed]
How could I capture just everything before the underscore using regular expressions for the following group of strings? These strings are in an element of an array.
"FBXW7_NM_018315_2"
"PTEN"
...
3
votes
2answers
209 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 ...
-3
votes
0answers
94 views
Which language would be more beneficial to learn for a PHP developer? [closed]
I know PHP and I want to impress myself by learning another language. I'm nowhere near an expert in PHP, but when I started to learn Laravel framework, I was like, "Wow, is this PHP? How cool is ...
1
vote
1answer
392 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
130 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 ...
4
votes
1answer
249 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 ...
0
votes
0answers
247 views
How to stay up to date as a programmer and developer [duplicate]
So I am going to college right now for computer science, and I am reading a lot of books on different languages that have nothing to do with my courses in school, and I found out that I am completely ...
0
votes
1answer
109 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
121 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 ...
-2
votes
1answer
118 views
Preliminary Ruby Resources [closed]
I've been programming with PHP for awhile as both a professional/hobbyist and would like to learn Ruby as well. I was going to pick up Agile Web Development with Rails and was wondering if there is ...
0
votes
1answer
76 views
Online stores service design
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 ...
2
votes
0answers
226 views
How difficult would it be to port Rails to PHP 5.4? [closed]
I have no intention or desire to do this, but out of idle curiosity, what would be some of the "gotchas" if one were to want to port Rails to PHP 5.4? Would it be possible with a fairly straight ...
-1
votes
1answer
337 views
Simple game using Ruby on Rails [closed]
I want to create a simple game like tic-tac-toe or connect4 or something like that using Rails. I have a (very) basic idea of how to write a Rails app with regular html elements, but I don't really ...
8
votes
2answers
223 views
Is Non-Deterministic Resource-Management a Leaky Abstraction?
From what I can see, there are two pervasive forms of resource-management: deterministic destruction and explicit. Examples of the former would be C++ destructors and smart pointers or Perl's DESTROY ...
1
vote
1answer
141 views
Should an open source gem contain .rvmrc?
Using .rvmrc seems to be considered a best practice for apps.
But should an open source gem contain .rvmrc in their source code on Github? I think it's not good to require everyone who wants to ...
1
vote
1answer
111 views
Ruby manager for Windows: Is Ruby's PIK alive or dying?
At first, please forgive probably offtopic and/or notconstructive question, but I truly have no idea where to ask it. At first I targetted StackOverflow there's at least some PIK-related traffic ...
1
vote
1answer
69 views
Building an RPC framework
I'm curious about what it takes to build a simple and robust RPC framework. I've only looked at a few ruby frameworks but they are all lacking in some way. What I want out of an RPC framework is some ...
0
votes
1answer
167 views
When can one call themselves a “Rubyist”? [closed]
I was wondering what that term even meant. Is it something to do with one's amount of knowledge about the Ruby language or just the plain idea of using it. When can one call themselves a "Rubyist"?
20
votes
6answers
871 views
How to avoid giant glue methods?
In my current job, I've been tasked with cleaning up old code a few times. Often the code is a labyrinth and the data behind it is even more tangled. I find myself combing out things into nice, ...
3
votes
3answers
190 views
Is there an idiom for a loop that executes some block of instructions between iterations? (In Ruby in particular)
I often need to do some operations in a loop and some other operations between the iterations. A simple example would be collecting words from an array into a string, spelled backwards and separated ...
2
votes
3answers
193 views
Setting up a simple Ruby\Rails environment
I am coming from a .NET background and beginning my journey into the Mac OSX\Ruby\Rails environment.
A lot of the resources I have found such as this one have between 5-10 steps for setting up a ...
2
votes
2answers
260 views
How to fix bad fundamentals? [closed]
I am a native PHP developer, and have been for about a year or so. I love PHP and it was very easy for me to learn, but I have developed some bad habits along the way due to never having a formal ...
2
votes
1answer
122 views
Does it make sense to create a Ruby wrapper to reference a Java object that does exactly the same thing?
I am using JRuby.
In my Java code, I have a class called Texture, capable of doing some graphic manipulation stuff.
In my Ruby code, I will usually need to draw things, so though I should simply ...
2
votes
1answer
279 views
What is a closure and how is it implemented in Ruby?
In the context of the Ruby programming language, what is a closure and when do you use one? What are the uses for it in Rails?
0
votes
2answers
241 views
How to execute a Ruby file in Java, capable of calling functions from the Java program and receiving primitive-type results?
I do not fully understand what am I asking (lol!), well, in the sense of if it is even possible, that is. If it isn't, sorry.
Suppose I have a Java program. It has a Main and a JavaCalculator class. ...
0
votes
3answers
133 views
Render Ruby object to interactive html
I am developing a tool that discovers network services enabled on host and writes short summary on them like this:
init,1
└── login,1560 --
└── bash,1629
└── nc,12137 -lup 50505
{
...
-2
votes
1answer
142 views
Where can I find out about basic python usage, cli, editor and testing? [closed]
I'm coming from Ruby / Ruby on Rails to Python.
Where can I find or find resources about:
The command prompt, what is python's version of 'irb'
info and recommendations on editors, plugins and IDE's
...
0
votes
1answer
95 views
Should tests be in the same Ruby file or in separated Ruby files?
While using Selenium and Ruby to do some functional tests, I am worried with the performance. So is it better to add all test methods in the same Ruby file, or I should put each one in separated code ...
3
votes
1answer
230 views
combining ruby and C++
I've been discussing a conceptual project with a friend of mine and the the most effective way we've seen of doing it is writing the engine in C++ while the logic would be done in Ruby.
However, we ...
0
votes
2answers
166 views
Question about initial interview for job [closed]
So I feel kind of stupid having to ask this but tomorrow I have a phone interview with a good company. Phone interviews themselves not a big deal for me, but having to tell them my salary ...
9
votes
1answer
501 views
Classless tables possible with Datamapper?
I have an Item class with the following attributes:
itemId,name,weight,volume,price,required_skills,required_items.
Since the last two attributes are going to be multivalued, I removed them and ...
7
votes
4answers
291 views
Is it okay to define a [] method in ruby's NilClass?
Ruby by default does not include the method [] for NilClass
For example, to check if foo["bar"] exists when foo may be nil, I have to do:
foo = something_that_may_or_may_not_return_nil
if foo ...
5
votes
7answers
433 views
Getting my younger brother started on programming [closed]
My younger brother is 13 years old, I started programming when I started to develop Android applications when I was 15, last year my brother gained an interest in it and he would always pestering me ...
0
votes
1answer
89 views
How do global cancel/exit commands work in bash?
As I have done multiple times before, I've written bash scripts, and just general commands that go nowhere. They just blink the little command line cursor at me for infinity until I control+C the ...
5
votes
2answers
330 views
What can procs and lambdas do that functions can't in ruby
I've been working in Ruby for the last couple weeks, and I've come to the subject of procs, lambdas and blocks. After reading a fair share of examples from a variety of sources, I don't how they're ...
-2
votes
1answer
278 views
Ruby: how to step through ruby code [closed]
I'm trying to learn how to step through Ruby code (written by more experienced programmers) in order to improve my knowledge of Ruby. Problem is that I don't really know how to do it well. Googling ...
-2
votes
3answers
259 views
Writing a DB Python or Ruby [closed]
I am planning on writing a database. I know it's crazy and people will tell me there is no good reason to do so. I am really using it to get better at programming overall, this database wont be used ...
5
votes
2answers
331 views
How relevant is UTF-7 when it comes to parsing emails?
I recently implemented incoming emails for an application and boy, did I open the gates of hell? Since then every other day an email arrives that makes the app fail in a different way.
One of those ...
1
vote
2answers
181 views
What is faster and preferable way for variable assignment in ruby? [closed]
I am a RoR developer and want to clarify some doubt about ruby variable assignment.
In ruby we have two ways for variable assignment.
str, arr, num = "Hi", [1, 2], 3
and
str = "Hi"
arr = [1, 2]
...
6
votes
4answers
3k views
Can we create desktop application with Ruby?
I know the Ruby on Rails framework is only for web development and not suitable for desktop application development. But if a ruby programmer wants to develop a desktop application, is it suitable and ...
2
votes
2answers
260 views
Should I prefer instance methods over class methods in Ruby?
I'm working on a rails application, and I've been pulling functionality out of my rails code and into pure ruby classes in lib/. I've found myself often writing classes like this:
class ...
1
vote
2answers
667 views
Is it worth converting a Django project to Rails?
I have a project I shelved a while back- it was essentially a working web app built in django but I stopped working on it to work on something else.
I plan on starting it up again in my spare time, ...
0
votes
3answers
306 views
How can I teach my 12 years old brother how program? [duplicate]
Possible Duplicate:
What are some good tools for introducing kids to programming?
Explaining programming to a child
I have a 12 years old brother whom asks me how he can build a website, ...
