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    Could someone please explain what exactly recursion is (and how it works in Ruby, if that's not too much to ... it's not entirely relevant). See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Given a standard has_many relationship between two objects. For a simple example, let's go with: class Order ... collection is also stubbed? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I was wondering if maybe there was some already built in function for rails so that it would create a select ... manually enter all the states? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I want a Customer to reference two Address models, one for the billing address and one for the shipping ... other attributes not shown end See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Can anyone explain the difference between accessing an instance attribute via self.attribute and by @attribute? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Is there a one line function call that quits the program and displays a message? I know in Perl it's as ... : puts "Message goes here" exit See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    After using jekyll serve on one machine, a WEBrick server is set up and the site can be accessed from localhost ... pushing the code to Github. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a large hash with nested arrays and hashes. I would like to simply print it out so it ' ... be formatted cleanly. Any suggestions? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I want to populate a new feature with dummy data, but don't want to use the db/seeds.rb file as it already ... like to run (only) that file? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I need to write a loop that does something like: if i (1..10) do thing 1 elsif i (11..20) do thing ... down the wrong paths in terms of syntax. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    What's the most efficient way to test if an array contains any element from a second array? Two examples below, ... - foods).size < cheeses.size See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm testing a model with an after create callback that I'd like to run only on some occasions while testing. ... do # run callback end end See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'd like to replace each value in a hash with value.some_method. For example, for given a simple hash: {"a" => ... new_hash = hash.magic{ ... } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Is it bad to check if an array is not empty by using any? method? a = [1,2,3] a.any? => true a.clear ... is it better to use unless a.empty? ? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am starting out with Ruby on Rails. I am currently going through a tutorial where it says that I have to run ... at all. I am running Leopard. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm trying to edit one of the gem's config files and I can't find it. I'm not sure how I did this in the past. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    With :limit in query, I will get first N records. What is the easiest way to get last N records? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am using ActiveAdmin gem in my project. I have 2 models using has_many through association. The database schema looks ... page? Thanks all. :) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    rails g model Rating user_id:integer message:string value:integer How can I completely remove this model? Thanks See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm new to ruby on rails but I want to send the data from my SQlite database from my iphone app to the rails ... of how all this works. Thanks! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm using memcached for some caching in my Rails 3 app through the simple Rails.cache interface and now ... anything definitive either way. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I've been experimenting with EC2 for a couple days and have been banging my head against simply even being ... would be greatly appreciated. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I read "Relationships between Rubygems, Bundler, and RVM" before asking it again. Well, there are many questions ... by your detailed answers. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I can run all tests in a single file with: rake test TEST=path/to/test_file.rb However, if I want to run ... rspec path/to/test_file.rb -l 25 See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Here is my needs: Enqueue_in(10.hours, ... ) (DJ syntax is perfect.) Multiply workers, concurrently. (Resque ... that you should check it out. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have an event with start_time and end_time and want to check if the event is "in progress". That would be to ... you do this in a function? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    http://betterspecs.org/#subject has some info about subject and let. However, I am still unclear on the difference ... go? I am so confused. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'd like to try out the ZSH shell on my Mac, but I also do a lot of Ruby and Rails development, so I ... s website, but nothing helped me there. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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