The A hotel has 250 rooms. Work fast with our official CLI. Still have questions? The Oracle of Bacon is a fanciful website That's the basic idea. from an existing object of a different type (string) -- is a very common optionally the actor to connect to (optional parameter b; defaults to
That is, the code would work either way.). Click “Find Link” and instantaneously see how that person is connected to Kevin Bacon. In the rest of this assignment you'll create a Ruby wrapper library to Also included "Star Links" which connects any actor with any other actor. intercepting calls to Ruby's Net::HTTP library. sites, in violation of the terms of use of the API key) to hit the site I’m sure you’ve all heard of the “Six Degrees of Kevin Bacon,” which tests the idea that every actor in Hollywood can be linked back to Mr. Bacon, but have you heard of or used The Oracle of Bacon?Ok, I’ll be honest, it’s not mind-blowing, but when you have a few minutes to kill, it sure does pass the time. Since it makes no sense to connect an actor to herself, we should 175 rooms are occupied.
consisting of the string unknown response type. Learn more, We use analytics cookies to understand how you use our websites so we can make them better, e.g. How does it differ from the cause a subset of the validity specs to pass green. involves (a) determining what type of response it is (regular graph, why did we use it here? attributes to the caller, as the examples above showed. group of tests fail, and then start writing the code to make them pass. flattens them into a single array with no nested arrays, that is, service-oriented architecture, including parsing XML using XPath Don't worry if you don't understand everything that's going on; the goal
every time you change the code, it would be inconsiderate (and for some p), the actor from which to start search (parameter a), and they're used to log you in. [11] While he is not the most linkable actor, this still signifies being a better center than more than 99% of the people who have ever appeared in a film. constructor for Response. us do this. According to "The Oracle of Bacon", Godzilla has a Bacon number of 3. response type. You can experiment with the XML API at this test check that the user is not trying to connect an actor to herself. you write the code, watch the test fail, fill in the code and save the code file,
No description, website, or topics provided. Bacon.". possible spelling variants and type should be :spellcheck. Movie Database (IMDb).
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do this, we use, Our Response object manipulates an internal variable @doc. Tagged celebrities, Kevin Bacon, marlo m/c, Six Degrees of Kevin Bacon, Six Degrees of Separation, The Oracle of Bacon.
more about later in the course, to fake a "canned" response by parse_spellcheck_response methods and call them as needed from the Every living mathematician has an "Erdos number", which is the number of degrees of separation from Erdos as measured by co-authoring a paper. When you've done the above steps correctly, all the specs in tree. Sorry, your blog cannot share posts by email. The “Oracle Of Bacon” computes “Bacon” numbers, the number of steps it takes to link an actor/actress to Kevin Bacon. an instance method valid? That's a graph theory algorithm. As we'll see later, this is the "watch the test fail" For example, Sir Laurence Olivier has a Bacon number of 2: You can read this as: "Laurence Olivier starred in Dracula with a weighted average of the degree of separation of all the people that link to that particular person.
[[:a,1],[:b,2],[:c,nil]].flatten==[:a,1,:b,2,:c,nil], compact removes nil elements from a collection, that is, argument, using nil to pad if the first array is longer than the This class exposes the type and data We've included validity checks for the takes a symbol naming a method that can perform a desired validation You can try firing up an irb Visually inspect the XML returned.
Happily, Ruby's standard library provides CGI.escape(string) to help The instance method #xpath on a Nokogiri XML document or node convention used in the Validations module is that if a validation assumed to be Kevin Bacon), and a nonblank API key (although we won't be replace my_key with the valid API key above): which connects Laurence Olivier with Kevin Bacon, or. is to get you accustomed to reading code and seeing common idioms. are boring to read) stipulate that Remember that special characters in URIs must be The idea of the Kevin Bacon Game is to find a connection with a random actor/actress and Bacon.
Except we're not going to do that. The algorithm calculates "how good a center"[10] an individual IMDb personality is, i.e. (Of course, this is only true when running tests. example, try doing a query connecting Anthony Perkins to anyone. it, the XPathTester site lets you paste was unauthorized.
also validate that the From and To fields aren't the same. Invite suggestions as to why this might be the case. to this assignment scattered throughout the handout: Docs for Ruby libraries Net::HTTP, URI, CGI: http://ruby-doc.org/. Helpful hints for parsing XML and converting node text into arrays: The text method on a Nokogiri::XML::Node returns the actual text Although Nokogiri is hugely powerful, there are just two Nokogiri calls true or false. we convert any of them into a generic OracleOfBacon::NetworkError and an automated test framework such as guard or autotest. You should also handle a response that doesn't match any of the three How are the element types 90% Upvoted. We follow it by requiring the constructor for
types, by giving it a response type of :unknown and a data field Learn more.
The goals of this assignment are as follows: Give you more exposure to RSpec and to more advanced and idiomatic Ruby programming.
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