class FindReadersNumberForBook
Attributes
book[R]
library[R]
Public Class Methods
new(library, book)
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# File lib/find_readers_number_for_book.rb, line 6 def initialize(library, book) @library = library @book = book end
perform(library, book)
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# File lib/find_readers_number_for_book.rb, line 2 def self.perform(library, book) new(library, book).perform end
Public Instance Methods
perform()
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# File lib/find_readers_number_for_book.rb, line 11 def perform find_the_number_of_readers end
Private Instance Methods
find_the_number_of_readers()
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# File lib/find_readers_number_for_book.rb, line 17 def find_the_number_of_readers book_readers = [] library.orders.each do |order| book_readers.push(order.reader) if new_reader?(book_readers, order) end book_readers.size end
new_reader?(found_readers, order)
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# File lib/find_readers_number_for_book.rb, line 25 def new_reader?(found_readers, order) order.book == book && !found_readers.include?(order.reader) end