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MySQL ('root'@'%') does not exist 的问题 - 爬虫/数据库 - 清泛IT社区,为创新赋能!
MySQL ('root'@'%') does not exist的问题:
在使用mysql时出现问题: The user specified as a definer ('root'@'%') does not exist。
一般是由于root用户对全局host无访问权限。因此只要给root用户添加一个访问权限即可。
解决办法:
登陆mysql ,...
如果后面再出现“AI伴侣断开连接”,说明mit官方的rez服务器有问题,需要重...
...面再出现“AI伴侣断开连接”,说明mit官方的rez服务器有问题,需要重启等处理。原因大概是wenrtc通信问题,官方论坛有提到。。。但是保险起见,如果频繁出现,则需要启用我们自己的rez服务器。或者aiStarter顶上昨天坏了一下...
HC-05/BLE 蓝牙通信数据乱码?接收到的中文乱码?乱码的原理及解决思路 · ...
...符合预期,但是中文显示乱码?
乱码的原理
解决乱码问题通用思路
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蓝牙通信过程中,数据出现乱码?
发送/接收如果是非预期或随机的乱码,大概率是波特率设置不对,HC-05的话改为9600试试。
数据符合预期...
按钮形状问题 - App应用开发 - 清泛IT社区,为创新赋能!
按钮形状更改后,手机软件无法得到更新后的形状请附上问题截图。是比如你把按钮设置为椭圆,ai 伴侣 还是 apk 运行 仍然是长方形吗?App Inventor 2 发表于 2024-07-23 17:31
请附上问题截图。是比如你把按钮设置为椭圆...
jQuery Ajax File Upload
...ed to use the XHR object but could not get results on the server side with PHP.
var formData = new FormData();
formData.append('file', $('#file')[0].files[0]);
$.ajax({
url : 'upload.php',
type : 'POST',
data : formData,
processData: false, // tell jQuery not to proces...
How do I make an asynchronous GET request in PHP?
...use error but in my case resulted in request not being processed by called php script.
– user3285954
Jun 20 '15 at 22:35
...
What is the best regular expression to check if a string is a valid URL?
...EFFFD}!\$&'\(\)\*\+,;=:@])|[\/\?])*)?)$/i
How they were compiled (in PHP):
<?php
/* Regex convenience functions (character class, non-capturing group) */
function cc($str, $suffix = '', $negate = false) {
return '[' . ($negate ? '^' : '') . $str . ']' . $suffix;
}
function ncg($str, $...
file_put_contents - failed to open stream: Permission denied
...to write a query to a file for debugging. The file is in database/execute.php . The file I want to write to is database/queries.php .
...
How to validate an email address in PHP
...k out this list for tests (both failed and succeeded) of the regex used by PHP's filter_var() function.
Even the built-in PHP functions, email clients or servers don't get it right. Still in most cases filter_var is the best option.
If you want to know which regex pattern PHP (currently) uses to ...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...单,而且很多时候推荐也是很准确的。然而它也存在一些问题:
依赖于准确的用户评分;
在计算的过程中,那些大热的物品会有更大的几率被推荐给用户;
冷启动问题。当有一名新用户或者新物品进入系统时,推荐将无从依...
