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The Ruby and Rails community linklog

Made a library? Written a blog post? Found a useful tutorial? Share it with the Ruby community here or just enjoy what everyone else has found!

7 daily use cases of Ruby Hash

by toch —

In that blog post, I share 7 use cases of Ruby Hash I met often. I hope it will be useful to you.

  1. How to convert a JSON into a Hash?
  2. How to convert a Hash into a JSON?
  3. How to set default value for a nested Hash?
  4. How to merge two nested Hashes?
  5. How to filter out some keys of a Hash?
  6. How to “sort” a Hash by value?
  7. How to find the differences between two Hashes?

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