So I am learning MVC3 and EF4. I tried the code first method but it was too confusing for me.. I can create the classes no problem, but the hard part comes when dealing with foreign keys and the rela
I assumed the answer to this is simple but at the moment it seems to be completely alluding me. I\'m using Mersenne Twister (implementation here http://www.bedaux.net/mtrand/) for generating random n
I\'m having some difficulties understanding how to use the seed.rb script in rails. So far, I\'ve used it to populate my database every time i deploy my application.
srand(time(NULL)); for (it=hand.begin(); it < hand.end(); it++) (*it) = rand() % 13 + 1; This code does not work to create many random numbers at a time.
Today I had a talk with a friend of mine told me he tries to make some monte carlo simulations using GPU. What was interesting he told me that he wanted to draw numbers randomly on different processor
I have the following rake task defined in my lib/tasks folder: namespace :db do namespace :test do task :prepare => :environment do
When I run rake db:seed in my Rails 3 application I get the error: rake aborted! undefined method \'find_or_create_by_first_name_and_last_name_and_role_and_email_and_password_and_password_confirmatio
I have an app t开发者_如何学Gohat uses Paperclip, and I am also using rake db:seed to generate some demo accounts that can be used to help bring in new users.
Is it possible 开发者_如何转开发to do this? If so, how can you do it? Note: FactoryBot was previously named FactoryGirlAll you need to do is add require \'factory_bot_rails\' to the db/seeds.rb file
While conducting some experiments in Java, my project supervisor reminded me to seed each iteration of the experiment with a different number. He also mentioned that I should use prime numbers for the
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