How do I set the name of a window in ROR?
How do I "name" a browser window in ROR, such that I can open a page in it later, from another (popup) window (using the target="name" html parameter) ...
ruby
What are the important Ruby commands?
I'm not sure of all of them, but what are the commands to do things like update Ruby, download a new gem, or update an existing gem? What other important things are there? Since it might matter, I'm running Windows. ...
How can I count the number of records that have a unique value in a particular field in ROR?
I have a record set that includes a date field, and want to determine how many unique dates are represented in the record set. Something like: Record.find(:all).date.unique.count but of course, that doesn't seem to work. ...
Ruby Introduction for C# Devs
I am curious about Ruby. Up to this point I have been following the whole C/C++/C# path and feel the need to branch out. Are there any references on how to get started and how it differs from other languages? ...
How to make Ruby or Python web sites to use multiple cores?
Even though Python and Ruby have one kernel thread per interpreter thread, they have a global interpreter lock (GIL) that is used to protect potentially shared data structures, so this inhibits multi-processor execution. Even though the portions in those languajes that are written in C or C++ can be free-threaded, that's not possible wit...
Integrating InstantRails with Aptana or any other IDE
So I've been using InstantRails to check out Ruby on rails. I've been using Notepad++ for the editing. Now I don't want to install Ruby or Rails on my machine. Is there any walk through/tutorial on how to integrate Radrails or Netbeans with InstantRails? ...
Determine if a ruby script is already running
Is there an easy way to tell if a ruby script is already running and then handle it appropriately? For example: I have a script called really_long_script.rb. I have it cronned to run every 5 minutes. When it runs, I want to see if the previous run is still running and then stop the execution of the second script. Any ideas? ...
IronRuby performance?
While I know IronRuby isn't quite ready for the world to use it, I was wondering if anyone here tried it and tested how well it faired against the other Rubies out there in terms of raw performance? If so, what are the results, and how did you go about measuring the performance (which benchmarks etc)? Edit: The IronRuby team maintains ...
Why is Lua considered a game language?
Why is Lua considered a game language? I have been learning about Lua in the past month and I'm absolutely in love with the language, but all I see around that is built with Lua are games. I mean, the syntax is very simple, there is no fuss, no special meaning characters that makes code look like regular expressions, has all the good th...
How do I convert a Ruby string with brackets to an array?
I would like to convert the following string into an array/nested array: str = "[[this, is],[a, nested],[array]]" newarray = # this is what I need help with! newarray.inspect # => [['this','is'],['a','nested'],['array']] ...
How do I make persistent network sockets on Unix in Ruby?
I'd like to be able to write a ruby program that can restart without dropping it's socket connections. ...
ruby idioms for using command-line options
I'm trying to pick up ruby by porting a medium-sized (non-OO) perl program. One of my personal idioms is to set options like this: use Getopt::Std; our $opt_v; # be verbose getopts('v'); # and later ... $opt_v && print "something interesting\n"; In perl, I kind of grit my teeth and let $opt_v be (effectively) a global. In ruby,the ...
Strange Rails Authentication Issue
I'm using the RESTful authentication Rails plugin for an app I'm developing. I'm having a strange issue I can't get to the bottom of. Essentially, the first time I log into the app after a period of inactivity (the app is deployed in production, but only being used by me), I will be brought to a 404 page, but if I go back to the home pag...
How to download a live MySQL db into a local test db on demand, without SSH?
I have a fairly small MySQL database (a Textpattern install) on a server that I do not have SSH access to (I have FTP access only). I need to regularly download the live database to my local dev server on demand; i.e., I would like to either run a script and/or have a cron job running. What are some good ways of doing this? Some points ...
What is the best way to convert an array to a hash in Ruby
In Ruby, given an array in one of the following forms... [apple, 1, banana, 2] [[apple, 1], [banana, 2]] ...what is the best way to convert this into a hash in the form of... {apple => 1, banana => 2} ...
What's the best way to use SOAP with Ruby?
A client of mine has asked me to integrate a 3rd party API into their Rails app. The only problem is that the API uses SOAP. Ruby has basically dropped SOAP in favor of REST. They provide a Java adapter that apparently works with the Java-Ruby bridge, but we'd like to keep it all in Ruby, if possible. I looked into soap4r, but it see...
Datetime arithmetic with a string in Ruby
In Ruby, I'm trying to do the following. def self.stats(since) return Events.find(:all, :select => 'count(*) as this_count', :conditions => ['Date(event_date) >= ?', (Time.now - since)]).first.this_count end where "since" is a string representing an amount of time ('1 hour', '1 day', '3 days') and so on. Any suggestions? ...
How do I install the mysql ruby gem under OS X 10.5.4
Here is the deal. $ gem --version 1.1.0 $ sudo gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config Bulk updating Gem source index for: http://gems.rubyforge.org/ ERROR: could not find mysql locally or in a repository $ sudo gem update Updating installed gems Bulk updating Gem source index...
Vista Console App?
I'm doing a fair bit of work in Ruby recently, and using ruby script/console Is absolutely critical. However, I'm really disappointed with the default Windows console in Vista, especially in that there's a really annoying bug where moving the cursor back when at the bottom of the screen irregularly causes it to jump back. Anyone have...
Waveform Visualization in Ruby
I'm about to start a project that will record and edit audio files, and I'm looking for a good library (preferably Ruby, but will consider anything other than Java or .NET) for on-the-fly visualization of waveforms. Does anybody know where I should start my search? ...