Engineer Calculator

Add this line to your application's Gemfile:

gem 'eng_calc'

And then execute:

$ bundle

Or install it yourself as:

$ gem install engineering_calculator

For web site of calculator, please visit following link. https://eng.eastazy.work/calculator

If your current directory is engineer_calcululator gem, please run "Rackup". Then access to http://localhost:9292/ , you can find web page.

Add following into your code.

require 'eng_calc'

Then make instance.

eng_calc = Eng::Calc.new

After make instance you can get calculation reulst by "calc" method. Conversion always perform by SI base unit.

eng_calc.calc("10cm+20m")
=> {:value=>"20.1", :unit=>"m", :convert_formula=>"0.1(m)+ 20(m) "}

After calc method, you can get alter unit result by "alter" method.

eng_calc.alter
=> {:si_unit=>[["Length", nil]],
  :variable=>[["Length",
    [["Å", 201000000000.0],
    ["mil", 791338.5826771759],
    ["in", 791.3385826771759],
    ["ft", 65.94488188976331],
    ["yd", 21.98162729658777], ...]]]}

If conversion has any error, you can get error message by "error" method.

eng_calc.error
=> {}

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.

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/engineering_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.

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

Everyone interacting in the EngineeringCalculator project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.