One Pager Cheat Sheet

• Currying is a transformation of functions that translates a function from callable asf(a, b, c)into a sequence of callable functions asf(a)(b)(c), which helps to avoid passing the same variable multiple times and create higher order functions.
• We are creating a function called curry that will return another function, curriedFunc, that will either spread the arguments provided or recursively call itself, depending on the case.

This is our final solution.

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function curry(func) {

  // ...args collects arguments as array

  return function curriedFunc(...args) {

    // Check if current args passed equals the number of args func expects

    if (args.length >= func.length) {

      // if args length equals the expected number, pass into func (spread)

      return func(...args);

    } else {

      /* Else, we return a function that collects the next arguments passed and 

      recursively call curriedFunc */

      return function (...next) {

        return curriedFunc(...args, ...next);

      };

    }

  };

}

Alright, well done! Try another walk-through.

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