今天写了下面的快速枚举for循环代码,从按钮数组subButtons中取出button,然后修改button的样式,在添加到view中 for (UIButton *button in subButtons) { button.selected = YES; button = [self updateStatusWithButton:button]; [self.view addSubview:button]; } 但是写完还未编译,就报如下错误: Fast enumeration variab…

如: INSERT INTO user (host, user, authentication_string, select_priv, insert_priv, update_priv) VALUES ('localhost', 'test1', '123456', 'Y', 'Y', 'Y'); 报错:ERROR 1364 (HY000): Field 'ssl_cipher' doesn't have a default value 出现错误的原因是mysql默认配置严格模式,该模式禁止通…

执行报错如下: No handlers could be found for logger "apscheduler.executors.default 解决: 加入日志,查看具体报错,载根据具体报错解决 import logging logging.basicConfig()…

当用foreach遍历Collection时,如果对Collection有Add或者Remove操作时,会发生以下运行时错误: "Collection was modified; enumeration operation may not execute." 如下所示: [c-sharp] view plaincopy List<string> list = new List<string>(); for (int i = 0; i < 10; i++)…

出现下面这就话: Strict Standards: Only variables should be passed by reference in E:\Tools\ECShop_V2.7.3_UTF8_release1106\upload\includes\cls_template.phpon line 418第418行:$tag_sel = array_shift(explode(' ', $tag)); 解决办法 1 5.3以上版本的问题,应该也和配置有关 只要418行把这一句拆成两句就…

1.添加M2_HOME的环境变量 2.Preference->Java->Installed JREs->Edit 选择一个jdk, 添加  -Dmaven.multiModuleProjectDirectory=$M2_HOME -Dmaven.multiModuleProjectDirectory=$M2_HOME…

package com.xxx; import com.fasterxml.jackson.annotation.JsonProperty; import lombok.Data; import lombok.NoArgsConstructor; import java.util.List; public class TestJsonNode { @Test public void test() { String json = "{\"status\": 0, \"…

storm每一个bolt在emit之后需要把数据传递到下一个bolt,所以declareOUtputFields 一定要写 默认的情况下不用加streamId,如果加了streamId,后面的bolt在使用shuffleGrouping时一定要写上steamId @Override public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) { // outputFieldsDeclarer.declare…

报错2019-04-24 12:06:46 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).2019-04-24 12:06:46 0 [Note] /usr/sbin/mysqld (mysqld 5.6.43) start…

今天做一个很简单的oj来温习下c 语言 题目如下 输入 3位正整数 输出 逆置后的正整数 代码如下： #include"stdio.h"int main(){ float h,sum;int inputCount;int n; char input[3]; scanf("%s",&input);n=2; while(n>=0) {  if(n==2&&input[n]=='0')  {   n--;   continue;  }  if…