Swift 类方法详解：定义、调用和示例 | 深入理解类方法

"Swift" "中" "的" "类" "方法" "是" "在" "类" "级别" "上" "定义" "的" "方法", "可以" "在" "不" "创建" "类" "的" "实例" "的" "情况下" "调用" "。" "类" "方法" "使用" "关键字" "class" "或" "static" "来" "声明" "。\n\n"下面" "是" "一个" "示例", "演示" "了" "如何" "定义" "和" "调用" "类" "方法" "：\n\nswift\nclass MathUtils {\n class func factorial(of number: Int) -> Int {\n if number <= 0 {\n return 1\n } else {\n return number * factorial(of: number - 1)\n }\n }\n}\n\nlet result = MathUtils.factorial(of: 5)\nprint(result) // 输出: 120\n\n\n"在" "上面" "的" "示例" "中", "我们" "定义" "了" "一个" "名为" "factorial" "的" "类" "方法" "。" "该" "方法" "计算" "给定" "数" "的" "阶乘" "。" "通过" "使用" "MathUtils.factorial(of: 5)" "的" "方式", "我们" "可以" "直接" "调用" "类" "方法" "来" "计算" "5" "的" "阶乘" "。