Is the Amazon sum question a standard currying question?
It is a variation. Standard currying has a fixed number of arguments. The Amazon question allows infinite chaining with a custom termination (empty call or toString). It tests the same concepts (closures, function chaining) but requires a different termination mechanism.
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More FAQs in Solving sum with a Generic Curry Function
The standard generic curry does not directly apply (it expects a fixed number of arguments). But you can adapt it for infinite chaining: function infiniteCurry(fn, initial) { return function(...args) { if (args.length === 0) return initial; return infiniteCurry(fn, fn(initial, ...args)); }; }
Generic curry expects a fixed number of arguments (fn.length) and calls the original when enough are collected. The Amazon sum allows infinite chaining and terminates on an empty call. The concept (closures, accumulation) is the same but the termination mechanism differs.
Instead of checking args.length >= fn.length, check if no arguments were passed (args.length === 0). If so, return the accumulated value. Otherwise, return a new curried function with the updated accumulator.
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