I could install it, doing this steps: 1) tried a normal install: gem install eventmachine it fetched the version 1.0.3 of the gem, but failed in the make, because of a variable declaration conflit 2) edited the file: c:\Ruby200-x64\lib\ruby\gems\2.0.0\gems\eventmachine-1.0.3\ext\project.h and commented the line 97 //typedef int pid_t; for a more robust correction, checkout the solution … Read more
I think this is the problem: You have bundler installed to a specific gemset, which is why it’s only available when you’re in your app’s directory (I’m assuming there’s a .rvmrc file in there). You have a few options: Install bundler to a global gemset. rvm gemset use global && gem install bundler If you … Read more
Mike Perham who wrote Sidekiq addressed this here: http://www.mikeperham.com/2009/05/25/memory-hungry-ruby-daemons/ tl;dr version: MRI will not give the memory back, the most you can do is control the heap, and to do that, Ruby Enterprise Edition was suggested. Don’t know that any of this helps, but that is the situation – straight from the horse’s mouth.
The proper way to do this is outlined here. Since the gemspec is evaluated at package time, you need to do it in a native extension. Don’t worry, it’s not that scary since its still just Ruby code (not compiling C or anything). We are currently using this approach for some client tools for OpenShift … Read more
For Rails3 applications, you might want to look into making a Railtie for your gem. You can do so with: lib/your_gem/railtie.rb require ‘your_gem’ require ‘rails’ module YourGem class Railtie < Rails::Railtie rake_tasks do require ‘path/to/rake.task’ end end end lib/your_gem.rb module YourGem require “lib/your_gem/railtie” if defined?(Rails) end Though, I had my share of difficulties with requiring … Read more
The Gemfile is wherever you want it to be – usually in the main directory of your project and the name of the file is Gemfile. It’s convenient to have one because it allows you to use Bundler to manage which gems and which versions of each your project needs to run. If you are … Read more
I think you can either use -E utf-8 command line argument to ruby, or set your RUBYOPT environment variable to “-E utf-8”
ActiveRecord should preserve the full precision from the database, you’re just not looking at it properly. Use strftime and the %N format to see the fractional seconds. For example, psql says this: => select created_at from models where id = 1; created_at —————————- 2012-02-07 07:36:20.949641 (1 row) and ActiveRecord says this: > Model.find(1).created_at.strftime(‘%Y-%m-%d %H:%M:%S.%N’) => … Read more
Define Object#as: class Object def as yield self end end And now you can write: def not_sure_this_is_nice_enough_method1 something_complex(a, b, c).as do |obj| a_predicate_check? ? obj.one_more_method_call : obj end end
Sure seems the only way to do this in Ruby is a filter type method then passing results to map. I’m not sure if this works in 1.8, but in 1.9 you could: [0,1,2,1,0].take_while {|val| val < 2}.map(&:some_function) Or in the times example 3.times.take_while {|count| count <= 1 } #=> [0,1]