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Good work overall! You make good use of whitespace to break up your code into sections. I've left a few inline comments below for you to review, but in general I am quite happy with this submission. |
| # method to verify user input - integer | ||
| def integer? | ||
| Integer(gets) rescue false | ||
| end |
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You've named this method integer? with a question mark, which implies that it should return a Boolean (true or false). However it looks like it returns the user's input as an integer. A better name for this method might be something like parse_input.
| # check for valid user input | ||
| until first | ||
| number_reprompt | ||
| first = integer? |
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You've written almost exactly the same code here twice, to get the first number and the second number. Could you DRY that up by putting this logic in a method?
| case op | ||
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| when "add", "+" | ||
| puts "#{first} + #{second} = #{first + second}" |
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This code isn't repeated, but I think it would still increase readability to wrap this case/when section in a method. That would clearly delineate where it starts and ends, and make it explicit what data it needs to work. The method signature might be something like perform_calculation(op, first, second).
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Calculator
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