CompoundInterest

Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file lib/compound_interest. To experiment with that code, run bin/console for an interactive prompt.

TODO: Delete this and the text above, and describe your gem

Add this line to your application's Gemfile:

gem 'compound_interest'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install compound_interest

In order to calculate compound interest, add this lines to your project:

require "compound_interest"

compound_interest = CompoundInterest::Calculation

compound_interest.calculate(params)

method .calculate accept Hash like this:

params = {
  initial_payment: 100,
  # number of terms
  term: 2,
  # number of interest payments for the term
  capitalization_periodicity: 12,
  # ineterest rate per term
  interest_rate: 10.0,
  # (optional)
  payment: 100,
  # (optional) number of payments for the term
  payment_periodicity: 12
}

In this example initial payment is 100$ (:initial_payment) for 2 years (:term) deposit, with annual interest rate 10% (:interest_rate). Interest paid every month (capitalization_periodicity: 12, it can be 365 if interest paid every day or anything else). Optionally, you can specify payment (:payment) this is the amount with which you replenish the deposit and payment periodicity (:payment_periodicity) stands for the number of replenishments for the period.

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec 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 the created tag, and push the .gem file to rubygems.org.

This is my first gem so go easy on me =)

Bug reports and pull requests are welcome on GitHub at https://github.com/VovaK0-23/compound_interest.

The gem is available as open source under the terms of the MIT License.