# 组件源码 ``` /** * <b>方法描述：</b> 集合清空 <br/> * <b>创建者：</b> admin <br/> * <b>创建时间：</b> 2018-05-11 11:51:51 <br/> * * @param c * 入参|集合|{@link java.util.Collection} * @return 0 失败<br/> * 1 成功<br/> */ @Component(label = "集合清空", style = "判断型", type = "同步组件", version = "1.0.0", deprecated = false, author = "admin", date = "2018-05-11 11:51:51") @InParams(param = { @Param(name = "c", comment = "集合", type = java.util.Collection.class) }) @Returns(returns = { @Return(id = "0", desp = "失败"), @Return(id = "1", desp = "成功") }) public static ResultBase P_clear(Collection c) { if (c == null) return ResultBase.newFailureResult("TPTC1001", "集合不能为空"); c.clear(); return ResultBase.newSuccessResult(); } ``` # 交易中组件使用方式  # 参数说明及示例 ## 入口参数 集合：传入一个非空集合，示例： `__REQ__["list"]` > 注意：IDE 中集合和数组都以 [] 表示。