Regardless of whether it's good practice or not, how can I dynamically call accessor methods in Ruby? Here's an example class: class Test_Class attr_accessor :a, :b end I can use the Object.send method to read the variable... instance.a = "value" puts( instance.send( "a" ) ) # => value But I'm having a hard time trying to write ...
I'm making a small ruby command line script and I wanted to know what the simplest way to have the program emit a beep is. ...
In ruby's test/unit, the software indicates how long it takes for the tests to run, and the series of passes, errors and fails act like a pseudo-progress bar. Apart from using code profiling tools or running tests individually, is there an easy way of telling which test methods are fast and which ones are slow? ...
I would like to do some fairly heavy-duty reflection in the Ruby programming language. I would like to create a function which would return the names of the arguments of various calling functions higher up the call stack (just one higher would be enough but why stop there?). I could use Kernel.caller go to the file and parse the argument...
I feel totally stupid asking this but but I'm new to programming so here goes... When you run the Ruby ri command from an OS X term window to look at documentation for a particular command, how do you "quit" the documentation? At the end of the document, an (END) is displayed but I don't see how to quit this. I've tried CTRL-C, CTRL-D...
I have a state field that stores the value as 2 characters. For example, Alabama is saved as AL, Alaska is saved as AK, Arizona is saved as AZ, etc. In the show.html.erb, how do I display the long name for the state such as Alabama instead of just showing AL? Is this possible or should I just store the long name in the database such as A...
Similar to this question: http://stackoverflow.com/questions/621340/checkboxes-on-rails What's the correct way of making radio buttons that are related to a certain question in Ruby on Rails? At the moment I have: <div class="form_row"> <label for="theme">Theme:</label> <br><%= radio_button_tag 'theme', 'plain', true %> Plain ...
I'm having ruby instances from mod_rails go "rogue" -- these processes are no longer listed in passenger-status and utilize 100% cpu. Other than installing god/monit to kill the instance, can anyone give me some advice on how to prevent this? I haven't been able to find anything in the logs that helps. ...
I need to add an element to an existing XML document which uses a namespace that doesn't exist in the original. How do I do this? Ideally I would like to use REXML for portability, but any common XML library would be okay. An ideal solution would be smart about namespace collisions. I have an xml document which looks like this: <xrds:...
Hi, I'm fairly new to Shoes and ran into two problems. First I want to set a mask using a partially transparent png, like this: mask do image "images/stencilMask.png" end Is this possible somehow or can only vector shapes be used? Apart from that, I noticed a small bug(?) when trying to set a transparent color as a stroke on ...
Does anybody know a place with a bunch of Ruby On Rails Layouts/CSS combinations? I am starting new applications and would like to give them different look, but I am not a designer, so I would love to use someone's else free layouts/css for starters. ...
I'm trying to find info on the p method in Ruby. It seems to produce internal info on the properties of a class but when I try to search for it I get every word that has the letter p in it. ...
def foo "foo" end alias foo2 foo puts "foo2: " + foo2.object_id.to_s puts "foo: " + foo.object_id.to_s In the above example, I expected to see the same object_id output for each method call since they reference the same method. Why do I see different object_id's? When you alias a method in Ruby doesn't the alias refer to the origi...
The is any way to remove the events in Shoes? I searched around many websites and references but I can't found any way to remove a event... I minding that I will need to create my own event manager... its really nescessary? or there is a way to desattach event listeners? ...
I'm working in Rails and I'm looking for a library/gem/plugin to generate a graphic from text. Google Maps doesn't allow you to overlay text, only graphics so I'm looking for a back door to overlay text. Suggestions? ...
I have just started the MIT Introduction to Algorithms course through the material posted online. Along with the course I have also decided to learn/enhance my Ruby skills by coding the algorithms in it. I am on the first algorithm given, which is Insertion sort, and I have the following code typed up but I am getting this error when I...
I need to do something where the file sizes are crucial. This is producing strange results filename = "testThis.txt" total_chars = 0 file = File.new(filename, "r") file_for_writing = nil while (line = file.gets) total_chars += line.length end puts "original size #{File.size(filename)}" puts "Totals #{total_chars}" like this origina...
I'm modding a TextMate bundle even though I'm a complete beginner at Ruby. The problem I'm trying to solve is the issue of moving the caret to a certain positition after the command has made its output. Basically what happens is this: I hit a key combo which triggers a command to filter through the document and inserts text at the relev...
I'm hoping to use Ruby as a scripting language for my game engine. I've found the usual articles describing how to call Ruby classes from C++ code and vice versa (e.g. here) but I can't quite see how to do what I want with that way of working... My engine currently uses a little language I wrote myself with Flex and Bison, and a little ...
In order to avoid content duplication, I would like to avoid the pages of my site being accessible by several URLs (with or without trailing slash). Currently, the URLs catalog/product/1 and catalog/product/1/ lead to the same page. My goal is that the second URL redirect to the first (redirection 301, of course). None page of my...