Програмиране с Ruby

Курс във Факултета по Математика и Информатика към СУ

Решение на Втора задача от Марио Даскалов

Обратно към всички решения

Към профила на Марио Даскалов

Резултати

  • 6 точки от тестове
  • 0 бонус точки
  • 6 точки общо
  • 21 успешни тест(а)
  • 1 неуспешни тест(а)

Код

class Todo
include Comparable
ATTRIBUTES = [:status, :description, :priority, :tags]
attr_reader *ATTRIBUTES
def initialize(task_tokens)
@status = task_tokens[0].downcase.to_sym
@description = task_tokens[1]
@priority = task_tokens[2].downcase.to_sym
@tags = task_tokens[3] ? task_tokens[3].split(',').map(&:strip): []
end
def <=>(other)
compare_result = ATTRIBUTES.map do |attr|
send(attr) <=> other.send(attr)
end.find(&:nonzero?)
compare_result ? compare_result : 0
end
end
class Criteria < Proc
def self.status(status)
Criteria.new { |arg| arg.status.eql? status }
end
def self.priority(priority)
Criteria.new { |arg| arg.priority.eql? priority }
end
def self.tags(tags)
Criteria.new { |arg| tags & arg.tags == tags }
end
def &(other)
Criteria.new { |arg| call(arg) and other.call(arg) }
end
def |(other)
Criteria.new { |arg| call(arg) or other.call(arg) }
end
def !
Criteria.new { |arg| not call(arg) }
end
end
class TodoList
include Enumerable
def self.parse(todos_string)
todos = todos_string.split("\n").map do |todo_string|
Todo.new(todo_string.split('|').map(&:strip))
end
TodoList.new(todos)
end
def initialize(todos)
@todos = todos
end
def each(&block)
@todos.each(&block)
end
def filter(criteria)
TodoList.new(select(&criteria))
end
def adjoin(other)
TodoList.new(to_a | other.to_a)
end
def tasks_todo
filter(Criteria.status(:todo)).count
end
def tasks_in_progress
filter(Criteria.status(:current)).count
end
def tasks_completed
filter(Criteria.status(:done)).count
end
end

Лог от изпълнението

...............F......

Failures:

  1) TodoList checks if all tasks are completed
     Failure/Error: todo_list.completed?.should eq false
     NoMethodError:
       undefined method `completed?' for #<TodoList:0xb894de10>
     # /tmp/d20131107-4393-tupyn0/spec.rb:131:in `block (2 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

Finished in 0.04342 seconds
22 examples, 1 failure

Failed examples:

rspec /tmp/d20131107-4393-tupyn0/spec.rb:130 # TodoList checks if all tasks are completed

История (1 версия и 0 коментара)

Марио обнови решението на 06.11.2013 15:55 (преди около 11 години)

+class Todo
+ include Comparable
+
+ ATTRIBUTES = [:status, :description, :priority, :tags]
+ attr_reader *ATTRIBUTES
+
+ def initialize(task_tokens)
+ @status = task_tokens[0].downcase.to_sym
+ @description = task_tokens[1]
+ @priority = task_tokens[2].downcase.to_sym
+ @tags = task_tokens[3] ? task_tokens[3].split(',').map(&:strip): []
+ end
+
+ def <=>(other)
+ compare_result = ATTRIBUTES.map do |attr|
+ send(attr) <=> other.send(attr)
+ end.find(&:nonzero?)
+ compare_result ? compare_result : 0
+ end
+end
+
+class Criteria < Proc
+ def self.status(status)
+ Criteria.new { |arg| arg.status.eql? status }
+ end
+
+ def self.priority(priority)
+ Criteria.new { |arg| arg.priority.eql? priority }
+ end
+
+ def self.tags(tags)
+ Criteria.new { |arg| tags & arg.tags == tags }
+ end
+
+ def &(other)
+ Criteria.new { |arg| call(arg) and other.call(arg) }
+ end
+
+ def |(other)
+ Criteria.new { |arg| call(arg) or other.call(arg) }
+ end
+
+ def !
+ Criteria.new { |arg| not call(arg) }
+ end
+end
+
+class TodoList
+ include Enumerable
+
+ def self.parse(todos_string)
+ todos = todos_string.split("\n").map do |todo_string|
+ Todo.new(todo_string.split('|').map(&:strip))
+ end
+ TodoList.new(todos)
+ end
+
+ def initialize(todos)
+ @todos = todos
+ end
+
+ def each(&block)
+ @todos.each(&block)
+ end
+
+ def filter(criteria)
+ TodoList.new(select(&criteria))
+ end
+
+ def adjoin(other)
+ TodoList.new(to_a | other.to_a)
+ end
+
+ def tasks_todo
+ filter(Criteria.status(:todo)).count
+ end
+
+ def tasks_in_progress
+ filter(Criteria.status(:current)).count
+ end
+
+ def tasks_completed
+ filter(Criteria.status(:done)).count
+ end
+end