引入cocoaPods后,第一次编译报这个错误 Pods was rejected as an implicit dependency for 'libPods.a' because its architectures 'x86_64' didn't contain all required architectures 'i386' 查了些资料,在网上有一种解决方法是去设置pod工程的 v
父类 public class Cigerate { private String name; public Cigerate(String name){ this.name = name; } } 子类 public class Baisha extends Cigerate{ String address; public Baisha(String addr
文章目录 1 Introduction2 Detail3 Summary 文章目录 1 Introduction2 Detail3 Summary 1 Introduction A database commit closes all opened database cursors. It is particularly important that da
YAMLException: can not read a block mapping entry; a multiline key may not be an implicit key 如题,使用hexo搭建博客时执行hexo g,报错 解决方法:打开你更新的md文档,检查头部 注意,title:,date:,tags:,后面一定要有空格。
理解: 以类似重载操作符的形式定义用于类型转换的函数 前者类型转换时候直接写等号赋值语法,后者要加目标类型的强制转换 stirng str -> object o -> int a 可以 int a = (int)(str as object)转换通过编译但没有转换逻辑所以运行会报错,explicit就可以解决这个问题,类似于dart语言中的 源类型对象.to目标类型() 的意思.
后台报错java.sql.SQLException: Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation ‘=’ 还是不能高估自己的记忆力,今年四五月份时就碰到过这个错误,现在10月份碰到这个错误全然不记得自己当时是怎样解决这个错误的,在同样的问
mysql字段编码排序规则不一致导致查询报错:Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT) for operation '= 查询的sql语句为: SELECT A.`id` FROM `news` A WHERE NOT EXISTS (SELECT B.`news_id