Method: Isbnify::ClassMethods#valid_isbn?

Defined in:
lib/isbnify.rb

#valid_isbn?(isbn_string = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/isbnify.rb', line 16

def valid_isbn?(isbn_string = nil)
  ISBN.valid_isbn?(isbn_string)
end