Frederick Cheung questions

Frederick Cheung answers

• Prevent caching of a single js file
• Correct way to access proxy's owner in association extension
• CORS with Amazon S3 and Cloudfront
• Ruby class vs instance method confusion
• How to check that a ruby value is a non-negative float?
• Can't access s3 buckets after creating instance using IAM profile
• bad URI(is not URI?) in tests Rspec [duplicate]
• Share session between two rails4 applications
• If exists update else create. Either case return the record
• Using 'they' instead of 'it' in RSpec