Memoize a currified function

Question

const f = (arg1) => (arg2) => { /* returns something */ }

Is it possible to memoize f with regard to the 2 arguments, namely:

f(1         


        

Answer 1

You can not to pass map to every function. You can do like the next:

const memoize = fn => {
  const cache = {};
  return (...args) => {
    const curriedFn = fn(...args);
    return (...next) => {
      const key = // generate your key
      if (key in cache) return cache[key];
      return (cache[key] = curriedFn(...next));
    }
  }
}