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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
低功耗蓝牙(BLE)以低功耗、低成本、开发简便逐渐被广泛应用，本文主要介绍一款较为通用、价格低廉的BLE设备从零开始如何利用App Inventor 2开发一款自己专属的手机蓝牙App应用。BLE与经典蓝牙的区别可参考：《低功耗蓝牙(BLE) ...
CDC:DrawText 多行显示文本（文本自动换行） - C++ UI - 清泛IT社区，为创新赋能！
//长文本自动换行
dc.DrawText(str, &rect, DT_LEFT | DT_TOP | DT_WORDBREAK | DT_EDITCONTROL, m_pfSongTi);
函数原型：
int DrawText(
HDC hDC, // handle to DC
LPCTSTR lpString, // text to draw
int nCount,...
When is CRC more appropriate to use than MD5/SHA1?
...sed for encryption purposes,
different strings can generate the collision,
invented in 1961 and used in Ethernet and many other standards,
MD5
is a cryptographic hash algorithm,
producing a 128-bit (16-byte) hash value (32 digit hexadecimal numbers)
it is a cryptographic hash, but is considered de...
Should I call Close() or Dispose() for stream objects?
...hat all cleanup logic went into Close(),
// which was thought up before we invented IDisposable. However, we
// need to follow the IDisposable pattern so that users can write
// sensible subclasses without needing to inspect all their base
// classes, and without worrying about version brittleness,...
What's the difference between a word and byte?
...
Yes, "byte" was especially convenient when the term was invented. Like many conventions, once they set in they persist. I'm not sure if byte-based terminology really makes computers any easier to understand in the big picture anymore, but it's the dominant convention and isn't lik...
Vagrant ssh authentication failure
...and clipboard, cat .ssh/id_rsa, paint and copy (better ways must exist, go invent one!).
Logout from the vagrant machine: logout.
Find the current private key used by vagrant by looking at its configuration: vagrant ssh-config (look for instance ÌdentityFile "/[...]/private_key".
Replace the curren...
How to detect a loop in a linked list?
... You should really cite your references. This algorithm was invented by Robert Floyd in the '60s, It's known as Floyd's cycle-finding algorithm, aka. The Tortoise and Hare Algorithm.
– joshperry
May 18 '10 at 16:30
...
Android系统级推送原理详解：为什么App被杀也能收到通知？ - App应用开发 -...
本文是"App Inventor 2 推送通知调研"系列的第三篇
相关帖子：AI2能否实现后台推送？源码级深度调研 | Supabase扩展Realtime能力分析
很多开发者都好奇：微信、淘宝这些 App，明明已经被我从后台杀掉了，为什么还能收到...
Easiest way to convert int to string in C++
...ld come up with a "nicer" interface. But as I said, this is by no means an invention of myself. Look around, this macro (macro!) is quite ubiquitous. That's a case of POLA in itself. I might toy with this a bit to make it more "streamlined".
– DevSolar
Jun 18 '...
Wolfram's Rule 34 in XKCD [closed]
...
xkcd did not invent Rule 34. It is as old as the Internet itself.
– jmucchiello
Dec 30 '09 at 20:49
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