mint-money (rubygems): # Mint::Money  Mint::Money perform currency conversion and arithmetics with different currencies.  ## Installation  Add this line to your application's Gemfile:  ```ruby gem 'mint-money' ```  And then execute:      $ bundle  Or install it yourself as:      $ gem install mint-money  ## Usage  ``` # Configure the currency rates with respect to a base currency (here EUR):   Money.conversion_rates('EUR', {   'USD'     =&gt; 1.11,   'Bitcoin' =&gt; 0.0047 }) ```   ``` # Instantiate money objects:   fifty_eur = Money.new(50, 'EUR')   # Get amount and currency:   fifty_eur.amount   # =&gt; 50 fifty_eur.currency # =&gt; "EUR" fifty_eur.inspect  # =&gt; "50.00 EUR" ```   ``` # Convert to a different currency (should return a Money # instance, not a String):   fifty_eur.convert_to('USD') # =&gt; 55.50 USD ```   ``` # Perform operations in different currencies:   twenty_dollars = Money.new(20, 'USD')   # Arithmetics:   fifty_eur + twenty_dollars # =&gt; 68.02 EUR fifty_eur - twenty_dollars # =&gt; 31.98 EUR fifty_eur / 2              # =&gt; 25 EUR twenty_dollars * 3         # =&gt; 60 USD ```   ``` # Comparisons (also in different currencies):   twenty_dollars == Money.new(20, 'USD') # =&gt; true twenty_dollars == Money.new(30, 'USD') # =&gt; false   fifty_eur_in_usd = fifty_eur.convert_to('USD') fifty_eur_in_usd == fifty_eur          # =&gt; true   twenty_dollars &gt; Money.new(5, 'USD')   # =&gt; true twenty_dollars &lt; fifty_eur             # =&gt; true ```  ## Development  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 tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).  ## Contributing  Bug reports and pull requests are welcome on GitHub at https://github.com/mpakus/mint-money.  [![CircleCI](https://circleci.com/gh/mpakus/mint-money.svg?style=svg)](https://circleci.com/gh/mpakus/mint-money)  
Keywords: btc|currency|eur|finance|gem|mint|money|ruby|rubygems|usd