Find all needed information about Activesupport Ordered Hash. Below you can see links where you can find everything you want to know about Activesupport Ordered Hash.
https://api.rubyonrails.org/classes/ActiveSupport/OrderedHash.html
Returns true to make sure that this hash is extractable via Array#extract_options!
https://api.rubyonrails.org/v3.2/classes/ActiveSupport/OrderedHash.html
In MRI the Hash class is core and written in C. In particular, methods are programmed with explicit C function calls and polymorphism is not honored. For example, []= is crucial in this implementation to maintain the @keys array but hash.c invokes rb_hash_aset() originally.
https://api.rubyonrails.org/v3.2.1/classes/ActiveSupport/OrderedHash.html
The order of iteration over hashes in Ruby 1.8 is undefined. For example, you do not know the order in which keys will return keys, or each yield pairs. ActiveSupport::OrderedHash implements a hash that preserves insertion order, as in Ruby 1.9: oh = ActiveSupport:: OrderedHash. new oh [: a] = 1 oh [: b] = 2 oh. keys # => [:a, :b], this order ...
https://apidock.com/rails/ActiveSupport/OrderedHash
is now a subclass of Hash that preserves order (or _is_ a Hash if running Ruby 1.9 or greater) You might not realize it preserves order because it delegates inspect to its super-class, Hash, which doesn’t preserve order. But you will see that order is preserved if you iterate or use the keys or values methods:
https://api.rubyonrails.org/v3.0.0/classes/ActiveSupport/OrderedHash.html
In: activesupport/lib/active_support/ordered_hash.rb: : Parent:::Hash : Methods
https://stackoverflow.com/questions/16103164/how-to-sort-a-hash-by-values
The order in which you traverse a hash by either key or value may seem arbitrary, and will generally not be in the insertion order. Source: Ruby 1.8.7 docs. Hash preserves order. It enumerates its elements in the; Source: Ruby 1.9.1 changelog. If you want to use a ordered hash in Ruby 1.8, you should look at ActiveSupport's OrderedHash
https://api.rubyonrails.org/classes/ActiveSupport/HashWithIndifferentAccess.html
Implements a hash where keys :foo and "foo" are considered to be the same. rgb = ActiveSupport::HashWithIndifferentAccess.
https://gist.github.com/selvait90/58cdf5c46fe89feeeea7
Ordered Hash. GitHub Gist: instantly share code, notes, and snippets.
https://github.com/rails/rails/blob/master/activesupport/lib/active_support/ordered_hash.rb
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