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BLE数据收发 20个字节的限制问题 - 创客硬件开发 - 清泛IT社区，为创新赋能！
请问BLE插件只支持20个字节的数据接收与发送吗，我尝试超过20个字节就会自动忽略掉后面的字节RequestMTU – 为 BluetoothLE 连接请求新的最大传输单元 (MTU)。此功能仅在两个设备都支持蓝牙 4.2 或更高版本时才受支持。如果 MTU 更改...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。你可以以如下的方式表示数字，0x开头的16进制和C是很像的。num = 1024
num = 3.0
num = 3.1416
num = 314.16e-2
num = 0.31416E1
num = 0xff
num = 0x56复制代码
字符串你可以用单引号，也...
Hidden Features of PHP? [closed]
...and getting a reference most of the time is great.
– Allain Lalonde
Sep 14 '08 at 17:46
1
This is...
PHP Get name of current directory
... libs/common.php
That way when common.php is require'd in main.php, the call of require_once in common.php will correctly includes editor.php in images/editor.php instead of trying to look in current directory where main.php is run.
...
how to delete all cookies of my website in php
I'm wondering if I can delete all my website's cookies when a user click on logout, because I used this as function to delete cookies but it isn't work properly:
...
relative path in require_once doesn't work
...
Note that you should manually include the trailing slash in after __DIR__. So: require_once(__DIR__.'/../class/user.php'); Per the documentation, the trailing slash is omitted except for the root directory.
– Ariel Allon
...
How to calculate the difference between two dates using PHP?
...ferred way of doing this is like described by jurka below. My code is generally only recommended if you don't have PHP 5.3 or better.
Several people in the comments have pointed out that the code above is only an approximation. I still believe that for most purposes that's fine, since the usage of...
解决MFC使用ShowWindow(SW_MAXIMIZE)任务栏被遮住的问题 - C/C++ - 清泛网 ...
解决MFC使用ShowWindow(SW_MAXIMIZE)任务栏被遮住的问题重载OnGetMinMaxInfo消息处理函数解决，代码如下：BEGIN_MESSAGE_MAP(CxxxDlg, CDialogEx)...ON_WM_GETMINMAXINFO()END_MESSAGE_MAP()...a...重载OnGetMinMaxInfo消息处理函数解决，代码如下：
BEGIN_MESSAGE_MAP(Cx...
iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...跑到出现异常的代码中呢？？？异常断点就为我们解决该问题，程序就会在异常出现的那行代码终止。创建异常断点图例如下：
如下所示就创建完成了。如果碰到异常crash时，尝试使用异常断点吧。
【4.符号断点Symbolic Breakp...
GET URL parameter in PHP
...perglobal: a built-in variable that's populated by PHP and is available in all scopes (you can use it from inside a function without the global keyword).
Since the variable might not exist, you could (and should) ensure your code does not trigger notices with:
<?php
if (isset($_GET['link'])) {
...