大约有 17,000 项符合查询结果（耗时：0.0275秒） [XML]
HC-05 蓝牙模块开发 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...，非UTF-8的，如“你好”对应16进制：C4 E3 BA C3。而AI2中文字符串默认是UTF-8编码的（E4 BD A0 E5 A5 BD ）。
如果遇到 Error 507 错误：
极有可能是硬件问题：
优惠券批量生成及导入的思路 - 闲聊区 - 清泛IT论坛，有思想、有深度
...的整数，那么又该如何转换成上述”字母+数字”的混合字符串形势呢？答案是：36进制。36进制数的表达区间是0-9，A-Z(a-z)，恰好满足要求。因此，我的方法是用随机函数生成长整形并转换成36进制，但是一个长整形的36进制位数...
为什么图像选择器选中的图片无法显示？ - App Inventor 2 中文网 - 清泛IT...
...器组件的背景图片路径，往往不会进行设置，返回的是空字符串。
查看文档可知，要使用“选中项”属性：
代码按如下修改即可：
[hide][/hide]
大佬，我也不会，想学习借鉴一下啊。寻求解决办法
How to write a cron that will run a script every day at midnight?
.../cron.d/myapp-cron
# use /bin/bash to run commands, no matter what /etc/passwd says
SHELL=/bin/bash
# Execute a nightly (11:00pm) cron job to scrub application records
00 23 * * * someuser /opt/myapp/bin/scrubrecords.php
...
MySQL integer field is returned as string in PHP
...rn $data;
}
Example usage:
$dbconn = mysqli_connect('localhost','user','passwd','tablename');
$rs = mysqli_query($dbconn, "SELECT * FROM Matches");
$matches = cast_query_results($rs);
// $matches is now a assoc array of rows properly casted to ints/floats/strings
...
Setting up FTP on Amazon Cloud Server [closed]
...xample, to create the user 'bret', type:
> sudo adduser bret
> sudo passwd bret
Here's what it will look like:
Step #6: Restricting users to their home directories
At this point, your FTP users are not restricted to their home directories. That's not very secure, but we can fix it pre...
What does int argc, char *argv[] mean?
...sble, though eccentric, to use: char *args[] = { "cat", "/dev/null", "/etc/passwd", 0 }; execv("/bin/ls", args);. On many systems, the value seen by the program as argv[0] will be cat, even though the executable is /bin/ls.
– Jonathan Leffler
Feb 5 '16 at 3:36...
How to split one string into multiple strings separated by at least one space in bash shell?
...u probably want:
Example:
IFS=: read -ra arr < <(grep "^$USER:" /etc/passwd)
for a in "${arr[@]}"; do echo "[$a]"; done
Outputs something like:
[tino]
[x]
[1000]
[1000]
[Valentin Hilbig]
[/home/tino]
[/bin/bash]
As you can see, spaces can be preserved this way, too:
IFS=: read -ra arr <&l...
正确重置MySQL密码 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...，重启一次即可：
首先需要把用到的SQL语句保存到一个文本文件里（/path/to/init/file）：
UPDATE mysql.user SET Password=PASSWORD('...') WHERE User='...' AND Host= '...';
FLUSH PRIVILEGES;
接着使用init-file参数启动MySQL服务，
shell> /etc/init.d/mysql stop
s...
正确重置MySQL密码 - 爬虫/数据库 - 清泛IT社区，为创新赋能！
...点，重启一次即可：首先需要把用到的SQL语句保存到一个文本文件里（/path/to/init/file）：UPDATE mysql.user SET Password=PASSWORD('...') WHERE User='...' AND Host= '...';
FLUSH PRIVILEGES;接着使用init-file参数启动MySQL服务，shell> /etc/init.d/mysql stop
she...