the very first Calculator

[xeniakolomiiets]

makeCalculator is a function that returns an object that
has the following fields:

• Methods: add, subtract, multiply, divide, reset, operate.
• The result property is initially 0.

How the calculator works:

• Each operate call takes a callback and a number and sets the appropriate value to the result property.
• The reset method resets result value to 0.
• add, subtract, multiply, divide are passed as callbacks to operate method.
• The operate and reset methods can be called in a chain.

[mateacademy-ai-mentor]

Review Summary

I am approving your solution because it cleanly meets all of the specified calculator requirements and there are no critical blockers. Your makeCalculator function correctly returns an object with result initialized to 0 and provides the required methods: add, subtract, multiply, divide, reset, and operate. The operate method properly takes a callback and a number, updates result, and does not restrict the callback to the calculator’s own methods, which aligns with the requirement that any function can be passed in. Both operate and reset return this, enabling method chaining as requested. Your method definitions use object method shorthand and avoid misuses of arithmetic with assignment, which matches the checklist expectations. Overall, the implementation is clear, functional, and consistent with the task’s behavioral and style requirements—well done.

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