前端魔法：柯里化 - 让函数变得灵活又有趣

function calculateTotal(price, tax, discount) {
  return price + price * tax - discount;
}

function calculateTotal(price) {
  return function (tax) {
    return function (discount) {
      return price + price * tax - discount;
    };
  };
}

// 这是如何使用柯里化的魔法
const totalPrice = calculateTotal(100)(0.1)(5);

// 非柯里化的过滤函数
function filterData(data, condition) {
  return data.filter(condition);
}

// 使用柯里化创建通用的过滤函数
function curriedFilter(condition) {
  return function (data) {
    return data.filter(condition);
  };
}

// 创建一些过滤条件
function isEven(num) {
  return num % 2 === 0;
}

function isOdd(num) {
  return num % 2 !== 0;
}

function isGreaterThan(limit) {
  return function (num) {
    return num > limit;
  };
}

// 创建柯里化的过滤函数
const filterEvenNumbers = curriedFilter(isEven);
const filterOddNumbers = curriedFilter(isOdd);
const filterNumbersGreaterThan10 = curriedFilter(isGreaterThan(10));

// 数据集
const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

// 使用柯里化的过滤函数
const evenNumbers = filterEvenNumbers(numbers);
const oddNumbers = filterOddNumbers(numbers);
const numbersGreaterThan10 = filterNumbersGreaterThan10(numbers);

console.log("偶数：", evenNumbers); // 输出：[2, 4, 6, 8, 10]
console.log("奇数：", oddNumbers); // 输出：[1, 3, 5, 7, 9]
console.log("大于10的数字：", numbersGreaterThan10); // 输出：[11]