Kata repository for String Calculator

This is a repository that can be used as a starting point for doing the String Calculcator code kata. It is based on Roy Osherove's TDD Kata (http://osherove.com/tdd-kata-1/)

There are 3 main branches:

master

This is the full implementation of the specs and string calculator.

specs_only

This branch has all the specs implemented and the shell of the StringCalculator module. See instructions for below for practising using this branch.

functionish

This is an alternate implementation of the algorithm which relies a little more on regex and the ruby collection methods to give it a more functional feel. This is the same algorithm I used in https://github.com/calebphillips/clojure-string-calculator

Getting set up from scratch

Install rvm
Clone this repo
Change into the string calculator directory and let rvm do its magic (follow the instructions to install ruby 1.9.2 and create the gemset if necessary).
git fetch origin specs_only:specs_only (Fetch the specs_only branch)
gem install bundler
bundle install

Practicing with specs_only

I think the best way to get started is to use the specs_only branch to memorize the solution first.

git checkout specs_only
bundle exec autotest
get all the tests to pass
git diff master (make sure you ended up where you intended to)
git reset --hard HEAD (this deletes your local changes)
repeat