Add a solution - #3071
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Review Summary
I am requesting changes because there is a direct violation of an explicit checklist requirement, which is considered a critical blocker for this task. In src/makeCalculator.js, all the operation methods update calculator.result using plain assignment like calculator.result = x + calculator.result;, calculator.result = calculator.result - x;, calculator.result = calculator.result * x;, and calculator.result = calculator.result / x;, which violates [CHECKLIST ITEM #2] that requires using arithmetic assignment operators. You should change these lines to use the compound forms, for example calculator.result += x, calculator.result -= x, calculator.result *= x, and calculator.result /= x so that updates to the existing value follow the required style. Functionally, your calculator behaves correctly: makeCalculator returns the right object, operate works with callbacks, and reset/operate are chainable, so once the assignment operators are fixed, the solution will meet the explicit requirements. As a minor improvement (not required for completion), consider using this.result inside the methods instead of calculator.result to make the object methods more idiomatic and flexible. Overall, you’re very close—fixing the arithmetic assignment style will bring your solution fully in line with the task expectations.
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mateacademy-ai-mentor
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mateacademy-ai-mentor
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Review Summary
Your solution is approved because it now fully meets the functional and checklist requirements for makeCalculator. The function correctly returns a calculator object with a result property initialized to 0 and all required methods (add, subtract, multiply, divide, operate, reset). Each operation method updates result using arithmetic assignment operators (like +=, -=, etc.), which matches the requirement from [CHECKLIST ITEM #2]. The methods are defined using object method shorthand (no function keyword), satisfying [CHECKLIST ITEM #3], and the naming is consistent with [CHECKLIST ITEM #1]. operate properly accepts any callback and a number, uses the callback to update result, and, along with reset, returns the calculator object to support chaining. There are no remaining critical or blocking issues, and the implementation behaves as specified across the required operations. Nicely done tightening up the behavior and syntax to align with all the constraints.
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