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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
... = 0x10, /* 设备安全管理TK值 */
BLE_AD_TYPE_SM_OOB_FLAG = 0x11, /* 设备安全管理OOB标志 */
BLE_AD_T...
Reading binary file and looping over each byte
...hile byte != "":
# Do stuff with byte.
byte = f.read(1)
finally:
f.close()
Python 2.5-2.7
with open("myfile", "rb") as f:
byte = f.read(1)
while byte != "":
# Do stuff with byte.
byte = f.read(1)
Note that the with statement is not available in versio...
MVC 3: How to render a view without its layout page when loaded via ajax?
...
@Matt Greer, you call it nasty, I call it DRY, subjective stuff anyway :-)
– Darin Dimitrov
Mar 15 '11 at 21:44
...
Convert an image (selected by path) to base64 string
...
109
Get the byte array (byte[]) representation of the image, then use Convert.ToBase64String(), st...
How to get last items of a list in Python?
... the python CLI interpreter:
>>> a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a[-9:]
[4, 5, 6, 7, 8, 9, 10, 11, 12]
the important line is a[-9:]
...
How can I use if/else in a dictionary comprehension?
...
@Marcin's answer covers it all, but just in case someone wants to see an actual example, I add two below:
Let's say you have the following dictionary of sets
d = {'key1': {'a', 'b', 'c'}, 'key2': {'foo', 'bar'}, 'key3': {'so', 'sad'}}
and you want ...
How do I make a textbox that only accepts numbers?
... Bitterblue
8,4181111 gold badges6868 silver badges109109 bronze badges
answered Jan 20 '09 at 22:04
Matt HamiltonMatt Hamilton
1...
ERROR: Error 1005: Can't create table (errno: 121)
...nswered Sep 27 '12 at 14:39
DorvallaDorvalla
4,02722 gold badges2121 silver badges3939 bronze badges
...
关于 __VA_ARGS__ 宽字符版本的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
关于 __VA_ARGS__ 宽字符版本的问题在写一个可变参数的记录日志函数，考虑到宽字符（Unicode版本）时：#define WIDEN2(x) L ## x#define WIDEN(x) WIDEN2(x)#define __...在写一个可变参数的记录日志函数，考虑到宽字符（Unicode版本）时：
#defin...
Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it
...se a dispatcher as descibed in the MSDN article:
How to: Make Thread-Safe Calls to Windows Forms Controls
So instead of setting the text property directly in the serialport1_DataReceived method, use this pattern:
delegate void SetTextCallback(string text);
private void SetText(string text)
{
// I...