LoanCalculator

LoanCalculator 是一个简单小型的房贷计算器，提供等额本息还款计算和等额本金还款计算，别让中介和银行把你蒙了。

Installation

Add this line to your application's Gemfile:

gem 'loan_calculator', git: 'https://github.com/xiewnewei/loan_calculator.git'

And then execute:

$ bundle

Or install it yourself as:

$ gem install loan_calculator

Usage

  # 贷款 100 万，20 年，利率 4.9%，等额本息还款
  tool = LoanCalculator.get(100, 20, 4.9)
  # 显示完整信息
  tool.display
  # 打印每月还款
  puts tool.month_amount

  # 贷款 100 万，20 年，利率 4.9%，等额本金还款
  tool = LoanCalculator.get(100, 20, 4.9, :same_capital)
  # 显示完整信息
  tool.display
  # 打印首月还款
  puts tool.month_amount

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/xiewenwei/loan_calculator. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.