self.new(*args, &block) — ActiveSupport::OrderedHash

self.new(*args, &block)

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. This prevents method reuse through inheritance and forces us to reimplement stuff.

For instance, we cannot use the inherited #merge! because albeit the algorithm itself would work, our []= is not being called at all by the C code.

Parameters

args rest
block block

Source

# File activesupport/lib/active_support/ordered_hash.rb, line 68
      def initialize(*args, &block)
        super
        @keys = []
      end

Defined in activesupport/lib/active_support/ordered_hash.rb line 68 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::OrderedHash

Signature

Parameters