Questions tagged [ruby]
Ruby is a multi-platform open-source, dynamic object-oriented interpreted language. The [ruby] tag is for questions related to the Ruby language, including its syntax and its libraries. Ruby on Rails questions should be tagged with [ruby-on-rails].
ruby
229,213
questions
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Ruby blocks/Java closures in C
I've been trying to understand how Ruby blocks work, and to do that I've been trying to implement them in C.
One easy way to implement closures is to pass a void* to the enclosing stack to the ...
- 13.1k
4
votes
2
answers
2k
views
JRuby / Rack deployment
I know this is pretty exotic, but I want to deploy a Ruby web application (not Rails, but Rack based, so it plugs into most Ruby servers just fine) using JRuby. Google and friends give me a few ...
- 11.8k
2
votes
2
answers
746
views
How do I access the Ruby AST from C level code?
I understand that the Ruby 1.8 AST is traversed at runtime using a big switch statement, and many things like calling a method in a class or parent module involve the interpreter looking up and down ...
- 888
23
votes
0
answers
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OpenID authentication in Ruby on Rails [duplicate]
I am a neophyte with Ruby on Rails but I've created a couple of small apps. Anyway, I'm really interested in OpenID and I would like to implement OpenID authentication and maybe some Sreg stuff in a ...
- 2,487
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votes
4
answers
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Why Doesn't My Cron Job Work Properly?
I have a cron job on an Ubuntu Hardy VPS that only half works and I can't work out why. The job is a Ruby script that uses mysqldump to back up a MySQL database used by a Rails application, which is ...
- 115k
88
votes
6
answers
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What do the different brackets in Ruby mean?
In Ruby, what's the difference between {} and []?
{} seems to be used for both code blocks and hashes.
Are [] only for arrays?
The documention isn't very clear.
- 48.7k
3
votes
2
answers
551
views
Why does sqlite3-ruby-1.2.2 not work on OS X?
I am running
OS X 10.5,
Ruby 1.8.6,
Rails 2.1,
sqlite3-ruby 1.2.2
and I get the following error when trying to rake db:migrate on an app that works find connected to MySQL.
rake aborted!
...
- 1,703
15
votes
4
answers
12k
views
Drawing Library for Ruby
I am trying to code a flowchart generator for a language using Ruby.
I wanted to know if there were any libraries that I could use to draw various shapes for the various flowchart elements and write ...
- 4,127
35
votes
5
answers
31k
views
Ruby mixins and calling super methods
Ok, so I've been refactoring my code in my little Rails app in an effort to remove duplication, and in general make my life easier (as I like an easy life). Part of this refactoring, has been to move ...
- 3,396
0
votes
2
answers
655
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How do I write those cool command line code generators (rails, sproutcore, webgen)
I've grokked the code for all the aforementioned apps and I still can't find a straightforward way to create a static directory structure from a single command.
- 2,967
58
votes
5
answers
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Why doesn't Ruby have a real StringBuffer or StringIO?
I recently read a nice post on using StringIO in Ruby. What the author doesn't mention, though, is that StringIO is just an "I." There's no "O." You can't do this, for example:
s = StringIO.new
s &...
- 64.9k
21
votes
15
answers
9k
views
Learning Ruby on Rails any good for Grails?
My company is in the process of starting down the Grails path. The reason for that is that the current developers are heavy on Java but felt the need for a MVC-style language for some future web ...
- 510
14
votes
8
answers
1k
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How to sell Python to a client/boss/person [closed]
When asked to create system XYZ and you ask to do it in Python over PHP or Ruby, what are the main features you can mention when they require you to explain it?
- 110k
11
votes
3
answers
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How do I create a Class using the Singleton Design Pattern in Ruby?
The singleton pattern is a design pattern that is used to restrict instantiation of a class to one object instance. Although I know how to code the singleton pattern in C++ and Java, I was wondering ...
- 35.9k
240
votes
20
answers
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How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
The firewall I'm behind is running Microsoft ISA server in NTLM-only mode. Hash anyone have success getting their Ruby gems to install/update via Ruby SSPI gem or other method?
... or am I just being ...
- 48.2k