もうすぐ2週間で頭から外せなくなりました。私はRubyの初心者であり、Ruby onRailsのこの最後の部分でコースラの紹介コースにこだわっています。ここで何が悪いのかを理解するのは確かに簡単ですが、今回はこのコースを時間内に終えるのに助けが必要です。
#Implement all parts of this assignment within (this) module2_assignment2.rb file
#Implement a class called LineAnalyzer.
class LineAnalyzer
#Implement the following read-only attributes in the LineAnalyzer class.
#* highest_wf_count - a number with maximum number of occurrences for a single word (calculated)
#* highest_wf_words - an array of words with the maximum number of occurrences (calculated)
#* content - the string analyzed (provided)
#* line_number - the line number analyzed (provided)
#Add the following methods in the LineAnalyzer class.
#* initialize() - taking a line of text (content) and a line number
#* calculate_word_frequency() - calculates result
#Implement the initialize() method to:
#* take in a line of text and line number
#* initialize the content and line_number attributes
#* call the calculate_word_frequency() method.
#Implement the calculate_word_frequency() method to:
#* calculate the maximum number of times a single word appears within
# provided content and store that in the highest_wf_count attribute.
#* identify the words that were used the maximum number of times and
# store that in the highest_wf_words attribute.
attr_accessor :highest_wf_count, :highest_wf_words, :content, :line_number
def initialize(content, line)
@content = content
@line_number = line
@highest_wf_count=0
@highest_wf_words = []
calculate_word_frequency()
end
def calculate_word_frequency()
@highest_wf_words = Hash.new
words = @content.split
words.each { |w|
if @highest_wf_words.has_key?(w)
@highest_wf_words[w] += 1
else
@highest_wf_words[w] = 1
end
}
@highest_wf_words.sort_by { |word, count| count }
@highest_wf_words.each do |key, value|
if value > @highest_wf_count
@highest_wf_count = value
end
end
end
def highest_wf_count= (number)
@highest_wf_count = number
end
end
# Implement a class called Solution.
class Solution
# Implement the following read-only attributes in the Solution class.
#* analyzers - an array of LineAnalyzer objects for each line in the file
#* highest_count_across_lines - a number with the maximum value for highest_wf_words attribute in the analyzers array.
#* highest_count_words_across_lines - a filtered array of LineAnalyzer objects with the highest_wf_words attribute
# equal to the highest_count_across_lines determined previously.
# Implement the following methods in the Solution class.
#* analyze_file() - processes 'test.txt' into an array of LineAnalyzers and stores them in analyzers.
#* calculate_line_with_highest_frequency() - determines the highest_count_across_lines and
# highest_count_words_across_lines attribute values
#* print_highest_word_frequency_across_lines() - prints the values of LineAnalyzer objects in
# highest_count_words_across_lines in the specified format
# Implement the analyze_file() method() to:
#* Read the 'test.txt' file in lines
#* Create an array of LineAnalyzers for each line in the file
# Implement the calculate_line_with_highest_frequency() method to:
#* calculate the maximum value for highest_wf_count contained by the LineAnalyzer objects in analyzers array
# and stores this result in the highest_count_across_lines attribute.
#* identifies the LineAnalyzer objects in the analyzers array that have highest_wf_count equal to highest_count_across_lines
# attribute value determined previously and stores them in highest_count_words_across_lines.
#Implement the print_highest_word_frequency_across_lines() method to
#* print the values of objects in highest_count_words_across_lines in the specified format
attr_reader :analyzers, :highest_count_across_lines, :highest_count_words_across_lines
def initialize
@highest_count_across_lines = nil
@highest_count_words_across_lines = nil
@analyzers = []
end
def analyze_file()
File.foreach('test.txt') do |content, line|
LineAnalyzer = LineAnalyzer.new(content, line)
@analyzers << LineAnalyzer
end
end
def calculate_line_with_highest_frequency()
@highest_count_across_lines = 0
@highest_count_words_across_lines = []
@analyzers.each do |analyzers|
if analyzers.highest_wf_words > @highest_count_across_lines
@highest_count_across_lines = analyzers.highest_wf_count
end
analyzers.highest_wf_words.each do |key, value|
if analyzers.highest_count_words_across_lines < value
@highest_count_words_across_lines << key
end
end
end
end
def print_highest_word_frequency_across_lines()
@highest_count_words_across_lines = Array.new
puts "The following words have the highest word frequency per line:"
end
end
私は次のようにrspecで19のうち1つが失敗し続けます:
LineAnalyzer
has accessor for highest_wf_count
has accessor for highest_wf_words
has accessor for content
has accessor for line_number
has method calculate_word_frequency
calls calculate_word_frequency when created
attributes and values
has attributes content and line_number
content attribute should have value "test"
line_number attribute should have value 1
#calculate_word_frequency
highest_wf_count value is 3
highest_wf_words will include "really" and "you"
content attribute will have value "This is a really really really cool cool you you you"
line_number attribute will have value 2
Solution
should respond to #analyze_file
should respond to #calculate_line_with_highest_frequency
should respond to #print_highest_word_frequency_across_lines
#analyze_file
creates 3 line analyzers
#calculate_line_with_highest_frequency
calculates highest count across lines to be 4
calculates highest count words across lines to be will, it, really (FAILED - 1)
Failures:
1) Solution#calculate_line_with_highest_frequency calculates highest count words across lines to be will, it, really
Failure/Error: words_found = solution.highest_count_words_across_lines.map(&:highest_wf_words).flatten
NoMethodError:
undefined method `highest_wf_words' for "This":String
# ./spec/solution_spec.rb:38:in `map'
# ./spec/solution_spec.rb:38:in `block (3 levels) in <top (required)>'
Finished in 0.10817 seconds (files took 0.37345 seconds to load)
19 examples, 1 failure
Failed examples:
rspec ./spec/solution_spec.rb:31 # Solution#calculate_line_with_highest_frequency calculates highest count words across lines to be will, it, really
そしてこれがsolution_specファイルです。どこに迷うの?助けてください、それは必死の電話です!
require_relative "../module2_assignment"
require 'rspec'
describe Solution do
subject(:solution) { Solution.new }
it { is_expected.to respond_to(:analyze_file) }
it { is_expected.to respond_to(:calculate_line_with_highest_frequency) }
it { is_expected.to respond_to(:print_highest_word_frequency_across_lines) }
context "#analyze_file" do
it "creates 3 line analyzers" do
expect(solution.analyzers.length).to eq 0
solution.analyze_file
expect(solution.analyzers.length).to eq 3
end
end
context "#calculate_line_with_highest_frequency" do
it "calculates highest count across lines to be 4" do
solution.analyze_file
expect(solution.highest_count_across_lines).to be nil
solution.calculate_line_with_highest_frequency
expect(solution.highest_count_across_lines).to be 4
end
it "calculates highest count words across lines to be will, it, really" do
solution.analyze_file
expect(solution.highest_count_words_across_lines).to be nil
solution.calculate_line_with_highest_frequency
words_found = solution.highest_count_words_across_lines.map(&:highest_wf_words).flatten
expect(words_found).to match_array ["will", "it", "really"]
end
end
end
あなたは多くの問題を抱えています。
Solution#analyze_fileメソッドではLineAnalyzer
、変数として定数()を使用しようとしています:LineAnalyzer = LineAnalyzer.new(content, line)
。次のように変更する必要があります。
line_analyzer = LineAnalyzer.new(content, line)
@analyzers << line_analyzer
あなたline
と同じ方法で変数が常にありますnil
。メソッドの最初の行をに置き換えることで、これを修正できますFile.foreach('test.txt').with_index(1) do |content, line|
。
の計算@highest_count_across_lines
はまったく機能しません。ゼロに設定して反復する代わりに、次のようにします。
@highest_count_across_lines = analyzers.map(&:highest_wf_count).max
私は率直に言ってテストに混乱していて、テストに合格する方法を見つけることにそれほど興奮していません。私見このコースは、非慣用的なRubyを教えています。しかし、うまくいけば、上記があなたを正しい軌道に乗せるでしょう。
この記事はインターネットから収集されたものであり、転載の際にはソースを示してください。
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