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SHS has asked 10 questions and find answers to 19 problems.

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How to elegantly symbolize_keys for a 'nested' hash

SHS answers

Rails has_one association when there are multiple records with foreign_key
How to stub a method that is called in initialize method
ruby on rails how to get latest records from has many relationship
RuntimeError (Circular dependency detected while autoloading constant Apps multithreading
Using described_class when including a module under test
Ruby: Wait for all threads completed using join and ThreadsWait.all_waits - what the difference?
What is the difference between = and - in haml while writing ruby code?
Why does Relation.size sometimes return a Hash in Rails 4
Array method that combines 'uniq' and 'compact'
CanCanCan throws a regular Rails error on an exception rather than a flash message like I specified