curry

//-----------------------------curry-------------------------
const add4=(a1,a2,a3,a4) => a1+a2+a3+a4;
const curry= func => {
  const prevParams=[];
  const currFunc= (...params) => {
    prevParams.push(...params);
    if ( prevParams.length >= func.length ) {
      return func(...prevParams);
    }
    else{
      return currFunc;
    }

  }
  return currFunc;
}

const cAdd4=curry(add4);
console.log(cAdd4(3,5)(4)(3),cAdd4(1,2,3,4));
//------------------------curry better-----------------------------------
// definitions
const curry = func => function currFunc(...params) {
    if (params.length >= func.length) {
      return func(...params);
    }
    return (...moreParams) => currFunc(...params, ...moreParams);
}

const partial = (func, ...params) => (...restParams) => func(...params, ...restParams);	//partial

// examples
const add4 = (a1, a2, a3, a4) => a1 + a2 + a3 + a4;

const cAdd4 = curry(add4);
const x = cAdd4(4); //x exei params 4 execution context to ena mesa sto allo mexri to telos an grapsw y= x(3) neo mesa sto idio meros //me x1
const x1 = x(5); //x1 exei params 5
const x2 = x1(7);	//x2 exei params 5

console.log(x2(5));	//to moreParams ginetai 5

const pAdd4 = partial(add4, 1, 3);

console.log(pAdd4(2,4))
console.log(pAdd4(2))
console.log(pAdd4(3))