seed

I am trying to reproduce a random sequence from python's random.random() on a different system with a different python3 version installed. This should be easy as the documentation says : Most of the random module’s algorithms and seeding functions are subject to change across Python versions, but two aspects are guaranteed not to change: If a new seeding method is added, then a backward compatible seeder will be offered. The generator’s random() method will continue to produce the same sequence when the compatible seeder is given the same seed. So I expect the following code to print always

I am very new to Ruby on Rails. I don't know what the function of the seed.rb file is, why we use this file, and why we need to run the rake db:seed command. Can anyone give an explanation with examples? Bootstrapping Data The purpose of seed data is to bootstrap your database. For example, if you have a users table where you track users' city and state, you may want to seed a related table with U.S. state names and abbreviations before creating the first user. Likewise, you may also want to seed things like administrative accounts, or other data that's necessary to run your application for

I generate a few thousand object in my program based on the C++ rand() function. Keeping them in the memory would be exhaustive. Is there a way to copy the CURRENT seed of rand() at any given time? This would give me the opportunity to store ONLY the current seeds and not full objects. (thus I could regenerate those objects, by regenerating the exact same sub-sequences of random numbers) An exhaustive solution is storing the full sequence of random numbers given by rand() - doesn't worth it. Another would be solution is to implement my own class for randomized numbers. Google gave me no

I'm trying to seed a database in Rails 3 with images using CarrierWave, however nothing I try seems to work short of having to upload them all by hand. pi = ProductImage.new(:product => product) pi.image = File.open(File.join(Rails.root, 'test.jpg')) pi.store_image! # tried with and without this product.product_images << pi product.save! Anybody know how to seed using CarrierWave at all? Nathan Kleyn Turns out the documentation for CarrierWave is slightly wrong. There is a more up to date piece of code in the README at the GitHub repository for the project . In a nutshell, though: pi =