Method: Rack::Response#has_header?

Defined in:
lib/rack/response.rb

#has_header?(key) ⇒ Boolean

Returns:

  • (Boolean)

Raises:

  • (ArgumentError)
[View source]

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# File 'lib/rack/response.rb', line 160

def has_header?(key)
  raise ArgumentError unless key.is_a?(String)
  @headers.key?(key)
end