Flowdock
method

key?

Importance_0
Ruby on Rails latest stable (v6.1.7.7) - 0 notes - Class: ActionDispatch::Http::Headers
key?(key) public

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# File actionpack/lib/action_dispatch/http/headers.rb, line 73
      def key?(key)
        @req.has_header? env_name(key)
      end
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