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vendor/rails/activesupport/lib/active_support/core_ext/array/wrapper.rb

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module ActiveSupport #:nodoc:

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  module CoreExtensions #:nodoc:

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    module Array #:nodoc:

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      module Wrapper

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        # Wraps the object in an Array unless it's an Array.  Converts the

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        # object to an Array using #to_ary if it implements that.

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        def wrap(object)

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          case object

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          when nil

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            []

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          when self

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            object

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          else

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            if object.respond_to?(:to_ary)

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              object.to_ary

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            else

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              [object]

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            end

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          end

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        end

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      end

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    end

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  end

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end

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