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You can access the count of parameters expected to passed into a function with "fn.length".
You can use recursion. If the length of params passed is equal to fn.length, you are done. Just pass those params to fn. Otherwise return a function that is includes the previous passed params plus the new params. The new function should contain a recursive call to curry().
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Jot down your thoughts, approach, and key learnings
The optimal approach uses closures to accumulate arguments across multiple function calls. Once the total number of collected arguments matches the original function's arity, the function is executed. This technique leverages JavaScript's ability to retain state within returned functions.
Yes, currying and functional programming concepts occasionally appear in JavaScript-focused interviews, especially for frontend roles. Understanding closures, function arity, and argument handling is often tested in such problems.
Most solutions use a simple array to store collected arguments. Each time the curried function is invoked, new arguments are appended until the total count meets the original function's expected parameters.
Closures are the key concept for solving the Curry problem. They allow inner functions to remember previously provided arguments, enabling the function to keep collecting inputs until the required number is reached.
