method

converted_arrays

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What's this?

converted_arrays() public

Attribute that keeps track of converted arrays, if any, to avoid double looping in the common use case permit + mass-assignment. Defined in a method to instantiate it only if needed.

Testing membership still loops, but it’s going to be faster than our own loop that converts values. Also, we are not going to build a new array object per fetch.

Show source

# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 215
    def converted_arrays
      @converted_arrays ||= Set.new
    end

converted_arrays

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