CODEWITHSUNDEEP
rubyarraysinitialization
user3832819
user3832819

Reputation: 25

Array object fails to initialize as array in Ruby

I'm trying to create a class Song that takes in two inputs, song and artist, and creates objects that are arrays i.e. [song, artist]. When I run this code, my assertion that my object is an array fails. How can I correctly write an initialize method that takes in two inputs and creates an array object?

My code: 

class Song 
    def initialize(song, artist)
        @piece = [song, artist]
    end
end

hello = Song.new("hello", "goodbye")

def assert
    raise "Assertion failed!" unless yield
end

assert { hello.kind_of?(Array) }

Upvotes: 2

Views: 60

Answers (2)

Anthony
Anthony

Reputation: 15967

your assertion assumes that hello is an array which is incorrect. hello is an instance of the class Song.

However, if you did added this to the top of your class:

attr_reader :piece

and then did this

assert { hello.piece.kind_of?(Array) }

that would pass.

Upvotes: 1

falsetru
falsetru

Reputation: 369164

hello is a Song object, not an array object. Do you mean hello.piece ?

class Song 
    attr_reader :piece  # <---------

    def initialize(song, artist)
        @piece = [song, artist]
    end
end

hello = Song.new("hello", "goodbye")

def assert
    raise "Assertion failed!" unless yield
end

assert { hello.piece.kind_of?(Array) } # <------

Upvotes: 1

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