在JavaScript中咖喱

<code class="javascript">// 非咖喱化函数
function multiply(a, b, c) {
  return a * b * c;
}

console.log(multiply(2, 3, 4)); // 24

// 咖喱化版本
function curriedMultiply(a) {
  return function(b) {
    return function(c) {
      return a * b * c;
    };
  };
}

console.log(curriedMultiply(2)(3)(4)); // 24</code>

<code class="javascript">// 计算运费的咖喱化函数
function calculateShippingCost(baseCost) {
  return function(weight) {
    return function(distance) {
      return baseCost + weight * 2 + distance * 0.5;
    };
  };
}

const standardShipping = calculateShippingCost(10); // 基础费用10元
const heavyItemShipping = standardShipping(20); // 重量20公斤

console.log(heavyItemShipping(100)); // 100公里运费：10 + (20 * 2) + (100 * 0.5) = 80</code>

<code class="javascript">// 创建日志记录器的咖喱化函数
function createLogger(prefix) {
  return function(message) {
    return function(timestamp) {
      return `[${timestamp}] ${prefix}: ${message}`;
    };
  };
}

const errorLogger = createLogger("ERROR");
const warnLogger = createLogger("WARN");

console.log(errorLogger("文件未找到")(new Date().toISOString()));
// [2025-10-15T12:00:00Z] ERROR: 文件未找到

console.log(warnLogger("磁盘空间不足")(new Date().toISOString()));
// [2025-10-15T12:00:00Z] WARN: 磁盘空间不足</code>