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BLE（一）概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble.html
0x1 BLE概述“蓝牙”，即Bluetooth，是斯堪的纳维亚语中 Blåtand / Blåtann 的英化版本。该词是十世纪的一位国王Harald Bluetooth的绰号，相传他将纷争不断的丹麦部落统一为一个王国，并引...
How to create a self-signed certificate with OpenSSL
I'm adding HTTPS support to an embedded Linux device. I have tried to generate a self-signed certificate with these steps:
...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...icknet -m tcp -t localhost:500 -p Test payload.
This is a simple script (https://github.com/grokit/dcore/tree/master/apps/quicknet) that opens a TCP socket, sends the payload ("Test payload." in this case), waits a few seconds and disconnects. Doing netstat again while this is happening displays t...
What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
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Two-way encryption: I need to store passwords that can be retrieved
... to or from the user. Either encrypt/decrypt it on the client side, or use https(or user other cryptographic means to secure connection between server and client).
However if all you need is to store passwords in encrypted way, I would suggest you to use a simple XOR Cipher. The main problem with ...
LEGO EV3 机器人按键控制 · App Inventor 2 中文网
...版权声明
原作者：CAVEDU Education
原项目链接：https://www.hackster.io/CAVEDU/app-inventor-lego-ev3-robot-button-control-5e6533
版权归属：本文档中所有内容版权归原项目作者所有。
您的改进建议 联...
What are copy elision and return value optimization?
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“Keep Me Logged In” - the best approach
..., bool $secure = false [, bool $httponly = false ]]]]]] )
secure (Using HTTPS connection)
httponly (Reduce identity theft through XSS attack)
Definitions
Token ( Unpredictable random string of n length eg. /dev/urandom)
Reference ( Unpredictable random string of n length eg. /dev/urandom)
Si...
Floating point vs integer calculations on modern hardware
...e, lower is faster and preferable):
Update to accomodate @Peter Cordes
https://gist.github.com/Lewiscowles1986/90191c59c9aedf3d08bf0b129065cccc
i7 4700MQ Linux Ubuntu Xenial 64-bit (all patches to 2018-03-13 applied)
short add: 0.773049
short sub: 0.789793
short mul: 0.960152
s...
What is the advantage to using bloom filters?
... the task of malicious URL testing in Python. The code can be found here - https://github.com/tarunsharma1/Bloom-Filter
The code is very simple to understand and a detailed description is provided in the readme file.
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