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Решение на Шеста задача от Тодор Ганчев

Обратно към всички решения

Към профила на Тодор Ганчев

Резултати

  • 0 точки от тестове
  • 0 бонус точки
  • 0 точки общо
  • 0 успешни тест(а)
  • 47 неуспешни тест(а)

Код

require 'bigdecimal'
require 'bigdecimal/util'
include Comparable
class ExchangeRate
def initialize
@rate_table = Hash.new
end
def set from_currency, to_currency, rate
@rate_table[[from_currency, to_currency]] = rate
@rate_table[[to_currency, from_currency]] = rate ** (-1)
end
def get from_currency, to_currency
if from_currency == to_currency then return '1'.to_d end
@rate_table[[from_currency, to_currency]]
end
def convert from_currency, to_currency, amount
rate = get from_currency, to_currency
rate * amount
end
end
class Money
attr_reader :amount, :currency
def initialize amount, currency
@amount = amount
@currency = currency
end
def to_s
amount_str = @amount.truncate(2).to_s('F')
if @amount.frac.to_s('F').length < 4 then amount_str << '0' end
amount_str + ' ' + @currency.to_s
end
def in new_currency, exchange_rate
new_amount = exchange_rate.convert @currency, new_currency, @amount
Money.new new_amount, new_currency
end
def * number
Money.new(@amount * number, @currency)
end
def / number
Money.new(@amount / number, @currency)
end
def - other
Money.new(@amount - other.amount, @currency)
end
def + other
Money.new(@amount + other.amount, @currency)
end
def <=> other
if @amount < other.amount
-1
elsif @amount == other.amount
0
else
1
end
end
end

Лог от изпълнението

/data/rails/evans-2012/releases/20130129110951/vendor/bundle/ruby/1.9.1/gems/rspec-core-2.11.0/lib/rspec/core/formatters/base_text_formatter.rb:103: stack level too deep (SystemStackError)
   stack level too deep

История (1 версия и 0 коментара)

Тодор обнови решението на 16.01.2013 14:09 (преди около 12 години)

+require 'bigdecimal'
+require 'bigdecimal/util'
+include Comparable
+
+class ExchangeRate
+ def initialize
+ @rate_table = Hash.new
+ end
+
+ def set from_currency, to_currency, rate
+ @rate_table[[from_currency, to_currency]] = rate
+ @rate_table[[to_currency, from_currency]] = rate ** (-1)
+ end
+
+ def get from_currency, to_currency
+ if from_currency == to_currency then return '1'.to_d end
+ @rate_table[[from_currency, to_currency]]
+ end
+
+ def convert from_currency, to_currency, amount
+ rate = get from_currency, to_currency
+ rate * amount
+ end
+end
+
+class Money
+ attr_reader :amount, :currency
+
+ def initialize amount, currency
+ @amount = amount
+ @currency = currency
+ end
+
+ def to_s
+ amount_str = @amount.truncate(2).to_s('F')
+ if @amount.frac.to_s('F').length < 4 then amount_str << '0' end
+ amount_str + ' ' + @currency.to_s
+ end
+
+ def in new_currency, exchange_rate
+ new_amount = exchange_rate.convert @currency, new_currency, @amount
+ Money.new new_amount, new_currency
+ end
+
+ def * number
+ Money.new(@amount * number, @currency)
+ end
+
+ def / number
+ Money.new(@amount / number, @currency)
+ end
+
+ def - other
+ Money.new(@amount - other.amount, @currency)
+ end
+
+ def + other
+ Money.new(@amount + other.amount, @currency)
+ end
+
+ def <=> other
+ if @amount < other.amount
+ -1
+ elsif @amount == other.amount
+ 0
+ else
+ 1
+ end
+ end
+end