You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: identifiable_collection_view.rb
    path of file: ./repos/nanoc/nanoc-core/lib/nanoc/core
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Nanoc
  module Core
    class IdentifiableCollectionV
    
      def [](arg)
        # The argument to #[] fall in two categories: exact matches, and
        # patterns. An example of an exact match is '/about.md', while an
        # example of a pattern is '/about.*'.
        #
        # If a Nanoc::Core::Identifier is given, we know it will need to be an
        # exact match. If a String is given, it could be either. If a Regexp is
        # given, we know it’s a pattern match.
        #
        # If we have a pattern match, create a dependency on the item
        # collection, with a `raw_content` property that contains the pattern.
        # If we have an exact match, do nothing -- there is no reason to create
        # a dependency on the item itself, because accessing that item
        # (attributes, compiled content, …) will create the dependency later.

        object_from_exact_match = nil
        object_from_pattern_match = nil

        case arg
        when Nanoc::Core::Identifier
          # Can only be an exact match
          object_from_exact_match = @objects.object_with_identifier(arg)
        when String
          # Can be an exact match, or a pattern match
          tmp = @objects.object_with_identifier(arg)
          if tmp
            object_from_exact_match = tmp
          else
            object_from_pattern_match = @objects.object_matching_glob(arg)
          end
        when Regexp
          # Can only be a pattern match
          object_from_pattern_match = @objects.find { |i| i.identifier.to_s =~ arg }
        else
          raise ArgumentError, "Unexpected argument #{arg.class} to []: Can only pass strings, identfiers, and regular expressions"
        end