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Simplest code for array intersection in javascript

... b.shift(); } } return result; } Non-destructive has to be a hair more complicated, since we’ve got to track indices: /* finds the intersection of * two arrays in a simple fashion. * * PARAMS * a - first array, must already be sorted * b - second array, must already be sort...
https://bbs.tsingfun.com/thread-1623-1-1.html 

开源MQTT网关:EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区,为创新赋能!

... EMQX 5.0 可在 23 个节点的单集群中建立 1 亿个并发的 MQTT 连接。优点:支持大规模部署高可用性横向可扩展性高性能和高可靠丰富的企业功能率先采用 MQTT over QUIC 缺点:上手复杂难以有效管理 社区情况EMQX 是 GitHub 上评价最高...
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列表显示框.获取主文本 方法参数怎么拼接?怎么使用? - App Inventor 2 中...

会员提问:请问下,这个紫色的块到底要怎么接,后面“列表元素”接什么数据? A:按照文档,是接一个字典的。存在的意义及具体用法需要研究。
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动态追踪(Dynamic Tracing)技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...为交互操作而生的,所以实现并不考虑生产安全性,也不怎么在乎性能损耗。一般它的性能损耗是极大的。同时 GDB 所基于的 ptrace 这种很古老的系统调用,其中的坑和问题也非常多。比如 ptrace 需要改变目标调试进程的父亲,还...
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OceanBase使用libeasy原理源码分析:客户端 - 数据库(内核) - 清泛网 - 专...

...来封装一个要发出去的请求,easy_client_t用来封装一个TCP连接的发起端,easy_hash_t是一个哈希表,easy_hash_list_t是采用开放寻址解决hash冲突的链表节点。 一、异步请求 在OceanBase 0.4 中,mergeserver请求chunkserver是异步的方式。实际使...
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PHP连接MySQL报错:Fatal error: Call to undefined function mysql_connec...

【问题描述】 PHP测试连接MySQL的程序如下: <?php $host='localhost'; $user_name='root'; $password='mysql'; $conn=mysql_connect($host,$user_name,$password); if (!$conn) {     die('数据库连接失败:'.mysql_error()); } echo '数据库连接成功!'; if (mysql_clos...
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9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...全管理,比如设定只能通过指定网段、由指定网口通过SSH连接本机: iptables -A INPUT -i eth0 -p tcp -s 192.168.100.0/24 --dport 22 -m state --state NEW,ESTABLESHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT 若要支持...
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How to train an artificial neural network to play Diablo 2 using visual input?

... I can see that you are worried about how to train the ANN, but this project hides a complexity that you might not be aware of. Object/character recognition on computer games through image processing it's a highly challenging task (not say crazy for FPS and RPG games). I ...
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Postfix发信的频率控制几个参数 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...的频率控制有几个: smtpd_client_connection_rate_limit=5 ip地址连接的频率控制. smtpd_client_message_rate_limit=5 客户端发送邮件的频率控制.(某种情况下smtpd_client_message_rate_limit和 smtpd_client_connection_rate_limit的效果是一样.smtpd_client_connection_rat...
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How to convert floats to human-readable fractions?

...ng for. Its based on the theory of continued fractions and very fast and fairly compact. I have used versions of this customized for specific numerator and denominator limits. /* ** find rational approximation to given real number ** David Eppstein / UC Irvine / 8 Aug 1993 ** ** With corrections ...