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This coding exercise comes from Upcase, the online learning platform we run. It's part of the Refactoring course and is just one small sample of all the great material available on Upcase, so be sure to visit and check out the rest.
In this exercise, you'll be extracting explaining variables within the total method of Tipper.
An explaining variable is a variable whose name describes the purpose of the expression you're assigning to it. It's used to help break down longer, more complex expressions, making the final expression more manageable and easier to understand.
Read more about explaining variables.
To start, you'll want to clone and run the setup script for the repo
git clone git@github.com:thoughtbot-upcase-exercises/explaining-variable.git
cd explaining-variable
bin/setup
Extract a few new variables whose names explain their purpose.
Make sure the tests are passing by running:
rake
Check out the featured solution branch to see the approach we recommend for this exercise.
If you find yourself stuck, be sure to check out the associated Upcase Forum discussion for this exercise to see what other folks have said.
When you've finished the exercise, head on back to the Refactoring course to find the next exercise, or explore any of the other great content on Upcase.
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This exercise is maintained and funded by thoughtbot, inc.
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