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怎么解决MQTT连接掉线，自动连接问题，同时解决，反复断开连接，断开连接问...
...连接问题，现在可以实现自动连接，但是在返回控制界面的时候，反复断开反复链接，还有切换页面的时候返回也是同样的问题，还有连接一个服务器，需要每个页面单独设置MQTT连接吗，是不是可以统一设置一个？https://www.fun12...
界面画质问题 - App应用开发 - 清泛IT社区，为创新赋能！
...机中分辨率就降低了，这个是啥原因？能否提供一下具体的截图，分辨率降低表现是什么？谢谢App Inventor 2 发表于 2024-07-27 15:09
能否提供一下具体的截图，分辨率降低表现是什么？谢谢
三个见面对比 原图的分辨率是 108...
Is calculating an MD5 hash less CPU intensive than SHA family functions?
...es 1024 bytes 8192 bytes
md5 35391.50k 104905.27k 229872.93k 330506.91k 382791.75k
sha1 38054.09k 110332.44k 238198.72k 340007.12k 387137.77k
Third update: OS X 10.14 with LibreSSL is a lot faster (still on the same machine). SHA-1 still comes out on to...
What is the strict aliasing rule?
...at the C89 Rationale cs.technion.ac.il/users/yechiel/CS/C++draft/rationale.pdf section 3.3 which talks about it.
– phorgan1
Jan 5 '12 at 1:44
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俄罗斯方块 .aia 源码 - .aia 案例源码 - 清泛IT社区，为创新赋能！
2200+个代码块，来自互联网，请自行研究，不提供技术支持。
Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
...o array variables (the original and the copy)?
– fede72bari
Sep 13 '19 at 8:18
add a comment
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Fastest way to determine if an integer's square root is an integer
...ts paper on fast inverse square roots: lomont.org/Math/Papers/2003/InvSqrt.pdf It uses the same technique as here, but with a different magic number. The paper explains why the magic number was chosen.
– user21037
Dec 2 '08 at 10:24
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SHA1 vs md5 vs SHA256: which to use for a PHP login?
...caveats of bcrypt
Bcrypt will silently truncate any password longer than 72 characters.
Bcrypt will truncate after any NUL characters.
(Proof of Concept for both caveats here.)
You might be tempted to resolve the first caveat by pre-hashing your passwords before running them through bcrypt, but...
What kinds of patterns could I enforce on the code to make it easier to translate to another program
...spired from PyPy and http://www.hpl.hp.com/techreports/Compaq-DEC/WRL-89-1.pdf paper.
Everything I tried, from beginning to the best solution, even if it looks like Pythonium marketing it really isn't (don't hesitate to tell me if something doesn't seem correct to the netiquette):
Implement Pytho...
What GRANT USAGE ON SCHEMA exactly do?
...
72
For a production system, you can use this configuration :
--ACCESS DB
REVOKE CONNECT ON DATABA...